/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 12:48:07,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:48:07,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:48:07,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:48:07,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:48:07,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:48:07,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:48:07,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:48:07,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:48:07,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:48:07,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:48:07,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:48:07,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:48:07,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:48:07,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:48:07,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:48:07,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:48:07,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:48:07,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:48:07,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:48:07,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:48:07,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:48:07,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:48:07,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:48:07,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:48:07,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:48:07,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:48:07,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:48:07,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:48:07,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:48:07,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:48:07,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:48:07,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:48:07,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:48:07,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:48:07,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:48:07,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:48:07,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:48:07,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:48:07,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:48:07,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:48:07,212 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:48:07,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:48:07,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:48:07,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:48:07,227 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:48:07,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:48:07,228 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:48:07,228 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:48:07,228 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:48:07,228 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:48:07,228 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:48:07,228 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:48:07,229 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:48:07,229 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:48:07,229 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:48:07,229 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:48:07,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:48:07,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:48:07,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:48:07,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:48:07,230 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:48:07,230 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:48:07,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:48:07,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:48:07,231 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:48:07,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:48:07,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:48:07,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:48:07,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:48:07,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:48:07,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:48:07,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:48:07,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:48:07,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:48:07,413 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:48:07,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:48:07,497 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Mbj6Tn/tmp/41f394c3017e4ccca84a03f986ad062d/FLAGff48a134d [2020-07-01 12:48:07,829 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:48:07,830 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:48:07,836 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Mbj6Tn/tmp/41f394c3017e4ccca84a03f986ad062d/FLAGff48a134d [2020-07-01 12:48:08,249 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_Mbj6Tn/tmp/41f394c3017e4ccca84a03f986ad062d [2020-07-01 12:48:08,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:48:08,262 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:48:08,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:48:08,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:48:08,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:48:08,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553c02cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08, skipping insertion in model container [2020-07-01 12:48:08,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:48:08,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:48:08,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:48:08,528 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:48:08,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:48:08,558 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:48:08,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08 WrapperNode [2020-07-01 12:48:08,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:48:08,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:48:08,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:48:08,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:48:08,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:48:08,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:48:08,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:48:08,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:48:08,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:48:08,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:48:08,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:48:08,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:48:08,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (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 12:48:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:48:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:48:08,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:48:08,824 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:48:08,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:48:08 BoogieIcfgContainer [2020-07-01 12:48:08,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:48:08,828 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:48:08,828 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:48:08,830 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:48:08,831 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:48:08" (1/1) ... [2020-07-01 12:48:08,843 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-07-01 12:48:08,844 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:48:08,845 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:48:08,846 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:48:08,846 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:48:08,848 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:48:08,849 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:48:08,849 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:48:08,862 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:48:08,875 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:48:08,879 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:48:08,880 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:48:08,891 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 12:48:08,893 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:48:08,894 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:48:08,894 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:48:08,895 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:48:08,895 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:48:08,895 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 12:48:08,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:48:08 BasicIcfg [2020-07-01 12:48:08,896 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:48:08,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:48:08,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:48:08,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:48:08,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:48:08" (1/4) ... [2020-07-01 12:48:08,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb9454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:48:08, skipping insertion in model container [2020-07-01 12:48:08,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (2/4) ... [2020-07-01 12:48:08,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb9454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:48:08, skipping insertion in model container [2020-07-01 12:48:08,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:48:08" (3/4) ... [2020-07-01 12:48:08,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb9454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:48:08, skipping insertion in model container [2020-07-01 12:48:08,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:48:08" (4/4) ... [2020-07-01 12:48:08,904 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:48:08,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:48:08,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:48:08,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:48:08,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:48:08,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:48:08,958 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:48:08,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:48:08,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:48:08,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:48:08,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:48:08,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:48:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 12:48:08,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:48:08,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 12:48:09,032 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:48:09,033 INFO L271 CegarLoopResult]: At program point L25-2(lines 25 28) the Hoare annotation is: true [2020-07-01 12:48:09,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:48:09 BasicIcfg [2020-07-01 12:48:09,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:48:09,041 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:48:09,041 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:48:09,045 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:48:09,046 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:48:09,046 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:48:08" (1/5) ... [2020-07-01 12:48:09,046 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e541ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:48:09, skipping insertion in model container [2020-07-01 12:48:09,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:48:09,047 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:48:08" (2/5) ... [2020-07-01 12:48:09,047 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e541ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:48:09, skipping insertion in model container [2020-07-01 12:48:09,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:48:09,047 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:48:08" (3/5) ... [2020-07-01 12:48:09,048 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e541ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:48:09, skipping insertion in model container [2020-07-01 12:48:09,048 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:48:09,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:48:08" (4/5) ... [2020-07-01 12:48:09,049 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e541ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:48:09, skipping insertion in model container [2020-07-01 12:48:09,049 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:48:09,049 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:48:09" (5/5) ... [2020-07-01 12:48:09,050 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:48:09,078 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:48:09,079 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:48:09,079 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:48:09,079 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:48:09,079 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:48:09,079 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:48:09,079 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:48:09,080 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:48:09,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 12:48:09,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:48:09,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:48:09,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:48:09,105 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:48:09,105 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:48:09,105 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:48:09,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 12:48:09,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:48:09,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:48:09,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:48:09,106 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:48:09,107 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:48:09,111 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L25-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~oldx~0=v_ULTIMATE.start_main_~oldx~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~oldx~0, ULTIMATE.start_main_~x~0] 4#L25-2true [2020-07-01 12:48:09,112 INFO L796 eck$LassoCheckResult]: Loop: 4#L25-2true [22] L25-2-->L25-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 |v_ULTIMATE.start_main_#t~nondet1_3|) (<= (* 2 v_ULTIMATE.start_main_~x~0_8) v_ULTIMATE.start_main_~oldx~0_6) (= v_ULTIMATE.start_main_~oldx~0_5 v_ULTIMATE.start_main_~x~0_8) (< 1 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|, ULTIMATE.start_main_~oldx~0=v_ULTIMATE.start_main_~oldx~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|, ULTIMATE.start_main_~oldx~0=v_ULTIMATE.start_main_~oldx~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~oldx~0, ULTIMATE.start_main_~x~0] 4#L25-2true [2020-07-01 12:48:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:48:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-07-01 12:48:09,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:48:09,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534194038] [2020-07-01 12:48:09,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:48:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,196 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:48:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:48:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-07-01 12:48:09,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:48:09,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021554073] [2020-07-01 12:48:09,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:48:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,214 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:48:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:48:09,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2020-07-01 12:48:09,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:48:09,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290822135] [2020-07-01 12:48:09,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:48:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:48:09,227 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:48:09,283 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:48:09,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:48:09,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:48:09,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:48:09,284 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:48:09,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:48:09,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:48:09,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:48:09,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:48:09,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:48:09,285 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:48:09,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,443 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:48:09,443 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 12:48:09,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:48:09,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:48:09,460 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:48:09,460 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 12:48:09,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:48:09,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:48:09,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:48:09,499 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 12:48:09,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:48:09,532 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 12:48:09,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:48:09,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:48:09,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:48:09,656 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:48:09,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:48:09,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:48:09,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:48:09,656 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:48:09,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:48:09,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:48:09,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:48:09,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:48:09,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:48:09,657 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:48:09,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:48:09,753 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:48:09,759 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 12:48:09,764 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:48:09,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:48:09,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:48:09,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:48:09,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:48:09,773 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:48:09,773 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:48:09,780 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 12:48:09,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:48:09,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:48:09,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:48:09,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:48:09,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:48:09,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:48:09,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:48:09,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:48:09,824 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:48:09,830 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:48:09,831 INFO L444 ModelExtractionUtils]: 2 out of 5 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 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 12:48:09,835 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:48:09,835 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:48:09,836 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:48:09,836 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~oldx~0) = 1*ULTIMATE.start_main_~oldx~0 Supporting invariants [] [2020-07-01 12:48:09,870 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:48:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:48:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:48:09,910 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:48:09,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:48:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:48:09,925 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:48:09,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:48:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:48:09,938 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 12:48:09,944 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 1 loop predicates [2020-07-01 12:48:09,945 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states. Second operand 2 states. [2020-07-01 12:48:09,963 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states.. Second operand 2 states. Result 3 states and 3 transitions. Complement of second has 2 states. [2020-07-01 12:48:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 12:48:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 12:48:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2020-07-01 12:48:09,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-01 12:48:09,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:48:09,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 12:48:09,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:48:09,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:48:09,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:48:09,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2020-07-01 12:48:09,974 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:48:09,977 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2020-07-01 12:48:09,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:48:09,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:48:09,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:48:09,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:48:09,979 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:48:09,979 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:48:09,980 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:48:09,980 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:48:09,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:48:09,980 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:48:09,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:48:09,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:48:09 BasicIcfg [2020-07-01 12:48:09,986 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:48:09,988 INFO L168 Benchmark]: Toolchain (without parser) took 1725.50 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.2 MB in the beginning and 539.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,989 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:48:09,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.93 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.2 MB in the beginning and 657.0 MB in the end (delta: -100.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 693.6 MB. Free memory was 657.0 MB in the beginning and 655.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,991 INFO L168 Benchmark]: Boogie Preprocessor took 18.45 ms. Allocated memory is still 693.6 MB. Free memory was 655.7 MB in the beginning and 654.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,991 INFO L168 Benchmark]: RCFGBuilder took 216.57 ms. Allocated memory is still 693.6 MB. Free memory was 654.3 MB in the beginning and 640.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,992 INFO L168 Benchmark]: BlockEncodingV2 took 68.07 ms. Allocated memory is still 693.6 MB. Free memory was 640.1 MB in the beginning and 636.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,993 INFO L168 Benchmark]: TraceAbstraction took 143.63 ms. Allocated memory is still 693.6 MB. Free memory was 634.7 MB in the beginning and 626.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,993 INFO L168 Benchmark]: BuchiAutomizer took 944.54 ms. Allocated memory is still 693.6 MB. Free memory was 626.6 MB in the beginning and 539.4 MB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:48:09,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 7 edges - StatisticsResult: Encoded RCFG 2 locations, 2 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 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.93 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 556.2 MB in the beginning and 657.0 MB in the end (delta: -100.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 693.6 MB. Free memory was 657.0 MB in the beginning and 655.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.45 ms. Allocated memory is still 693.6 MB. Free memory was 655.7 MB in the beginning and 654.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 216.57 ms. Allocated memory is still 693.6 MB. Free memory was 654.3 MB in the beginning and 640.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 68.07 ms. Allocated memory is still 693.6 MB. Free memory was 640.1 MB in the beginning and 636.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 143.63 ms. Allocated memory is still 693.6 MB. Free memory was 634.7 MB in the beginning and 626.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 944.54 ms. Allocated memory is still 693.6 MB. Free memory was 626.6 MB in the beginning and 539.4 MB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 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=2occurred 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 x and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax175 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf91 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:48:04.982 ----------------------------------------------- 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_Mbj6Tn/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:48:10.430 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check