/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 12:02:06,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:02:06,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:02:06,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:02:06,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:02:06,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:02:06,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:02:06,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:02:06,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:02:06,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:02:06,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:02:06,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:02:06,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:02:06,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:02:06,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:02:06,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:02:06,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:02:06,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:02:06,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:02:06,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:02:06,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:02:06,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:02:06,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:02:06,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:02:06,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:02:06,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:02:06,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:02:06,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:02:06,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:02:06,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:02:06,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:02:06,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:02:06,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:02:06,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:02:06,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:02:06,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:02:06,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:02:06,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:02:06,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:02:06,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:02:06,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:02:06,523 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:02:06,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:02:06,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:02:06,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:02:06,539 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:02:06,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:02:06,539 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:02:06,539 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:02:06,539 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:02:06,540 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:02:06,541 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:06,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:02:06,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:02:06,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:02:06,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:02:06,542 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:02:06,542 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:02:06,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:02:06,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:02:06,542 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:02:06,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:02:06,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:02:06,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:02:06,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:02:06,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:02:06,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:02:06,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:02:06,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:02:06,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:02:06,732 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:02:06,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:02:06,805 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_iREk3o/tmp/d6c780529e7642799c183fd0eca8acf1/FLAG3f15be983 [2020-07-01 12:02:07,138 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:02:07,139 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:02:07,145 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_iREk3o/tmp/d6c780529e7642799c183fd0eca8acf1/FLAG3f15be983 [2020-07-01 12:02:07,551 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_iREk3o/tmp/d6c780529e7642799c183fd0eca8acf1 [2020-07-01 12:02:07,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:02:07,564 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:02:07,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:02:07,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:02:07,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:02:07,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cf8054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07, skipping insertion in model container [2020-07-01 12:02:07,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:02:07,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:02:07,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:02:07,831 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:02:07,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:02:07,863 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:02:07,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07 WrapperNode [2020-07-01 12:02:07,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:02:07,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:02:07,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:02:07,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:02:07,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:02:07,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:02:07,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:02:07,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:02:07,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (1/1) ... [2020-07-01 12:02:07,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:02:07,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:02:07,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:02:07,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:02:07,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (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 12:02:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:02:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:02:08,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:02:08,157 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 12:02:08,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:02:08 BoogieIcfgContainer [2020-07-01 12:02:08,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:02:08,161 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:02:08,161 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:02:08,164 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:02:08,165 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:02:08" (1/1) ... [2020-07-01 12:02:08,178 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 10 edges [2020-07-01 12:02:08,180 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:02:08,181 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:02:08,182 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:02:08,182 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:02:08,184 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:02:08,185 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:02:08,185 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:02:08,200 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:02:08,215 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 12:02:08,220 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:02:08,221 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:02:08,230 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 12:02:08,232 INFO L70 RemoveSinkStates]: Removed 5 edges and 3 locations by removing sink states [2020-07-01 12:02:08,233 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:02:08,233 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:02:08,233 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:02:08,234 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:02:08,234 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 12:02:08,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:02:08 BasicIcfg [2020-07-01 12:02:08,235 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:02:08,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:02:08,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:02:08,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:02:08,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:02:07" (1/4) ... [2020-07-01 12:02:08,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406bd4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (2/4) ... [2020-07-01 12:02:08,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406bd4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:02:08" (3/4) ... [2020-07-01 12:02:08,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406bd4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:02:08" (4/4) ... [2020-07-01 12:02:08,243 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:02:08,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:02:08,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:02:08,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:02:08,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:02:08,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:02:08,298 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:02:08,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:02:08,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:02:08,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:02:08,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:02:08,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:02:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 12:02:08,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:02:08,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 12:02:08,371 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:02:08,372 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-01 12:02:08,372 INFO L271 CegarLoopResult]: At program point L6-2(lines 6 9) the Hoare annotation is: true [2020-07-01 12:02:08,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:02:08 BasicIcfg [2020-07-01 12:02:08,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:02:08,381 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:02:08,381 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:02:08,384 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:02:08,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:02:08,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:02:07" (1/5) ... [2020-07-01 12:02:08,386 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1daa7699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,386 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:02:08,386 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:02:07" (2/5) ... [2020-07-01 12:02:08,387 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1daa7699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:02:08,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:02:08" (3/5) ... [2020-07-01 12:02:08,387 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1daa7699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:02:08,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:02:08" (4/5) ... [2020-07-01 12:02:08,388 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1daa7699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:02:08, skipping insertion in model container [2020-07-01 12:02:08,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:02:08,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:02:08" (5/5) ... [2020-07-01 12:02:08,390 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:02:08,418 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:02:08,418 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:02:08,418 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:02:08,419 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:02:08,419 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:02:08,419 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:02:08,419 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:02:08,419 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:02:08,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:02:08,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:02:08,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:02:08,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:02:08,446 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:02:08,447 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:02:08,447 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:02:08,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:02:08,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:02:08,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:02:08,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:02:08,448 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:02:08,448 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:02:08,453 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [28] ULTIMATE.startENTRY-->L5: Formula: (and (= v_ULTIMATE.start_quot_~x_1 |v_ULTIMATE.start_quot_#in~x_1|) (= v_ULTIMATE.start_quot_~i~0_1 0) (= v_ULTIMATE.start_quot_~y_1 |v_ULTIMATE.start_quot_#in~y_1|) (= |v_ULTIMATE.start_quot_#in~y_1| |v_ULTIMATE.start_main_#t~nondet1_1|) (= |v_ULTIMATE.start_quot_#in~x_1| |v_ULTIMATE.start_main_#t~nondet0_1|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_1, ULTIMATE.start_quot_#res=|v_ULTIMATE.start_quot_#res_1|, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_1, ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_1, ULTIMATE.start_quot_#in~y=|v_ULTIMATE.start_quot_#in~y_1|, ULTIMATE.start_quot_#in~x=|v_ULTIMATE.start_quot_#in~x_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_quot_~y, ULTIMATE.start_quot_#res, ULTIMATE.start_quot_~i~0, ULTIMATE.start_quot_~x, ULTIMATE.start_quot_#in~y, ULTIMATE.start_quot_#in~x] 3#L5true [38] L5-->L6-2: Formula: (< 0 v_ULTIMATE.start_quot_~x_4) InVars {ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_4} OutVars{ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_4} AuxVars[] AssignedVars[] 5#L6-2true [2020-07-01 12:02:08,454 INFO L796 eck$LassoCheckResult]: Loop: 5#L6-2true [34] L6-2-->L6-2: Formula: (and (< 0 v_ULTIMATE.start_quot_~x_7) (< 0 v_ULTIMATE.start_quot_~y_4) (= v_ULTIMATE.start_quot_~x_6 (+ v_ULTIMATE.start_quot_~x_7 (* v_ULTIMATE.start_quot_~y_4 (- 1)))) (= v_ULTIMATE.start_quot_~i~0_4 (+ v_ULTIMATE.start_quot_~i~0_5 1))) InVars {ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_7, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_5, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_4} OutVars{ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_6, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_4, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_4} AuxVars[] AssignedVars[ULTIMATE.start_quot_~x, ULTIMATE.start_quot_~i~0] 5#L6-2true [2020-07-01 12:02:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1867, now seen corresponding path program 1 times [2020-07-01 12:02:08,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:08,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400282761] [2020-07-01 12:02:08,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,546 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:02:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 12:02:08,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:08,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646921855] [2020-07-01 12:02:08,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,562 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:02:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:08,563 INFO L82 PathProgramCache]: Analyzing trace with hash 57911, now seen corresponding path program 1 times [2020-07-01 12:02:08,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:08,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272042946] [2020-07-01 12:02:08,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:08,580 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:02:08,628 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:02:08,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:02:08,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:02:08,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:02:08,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:02:08,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:08,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:02:08,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:02:08,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:02:08,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:02:08,630 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:02:08,649 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 12:02:08,668 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 12:02:08,728 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:02:08,728 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 12:02:08,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:02:08,736 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 12:02:08,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:02:08,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:02:08,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:02:08,891 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:02:08,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:02:08,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:02:08,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:02:08,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:02:08,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:08,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:02:08,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:02:08,892 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:02:08,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:02:08,892 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:02:08,894 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 12:02:08,905 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 12:02:08,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:02:08,961 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:08,966 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 12:02:08,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:02:08,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:02:08,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:02:08,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:02:08,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:02:08,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:02:08,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:02:08,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:02:08,986 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:02:08,986 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:08,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:02:08,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:02:08,993 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:02:08,994 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_quot_~x) = 1*ULTIMATE.start_quot_~x Supporting invariants [] [2020-07-01 12:02:09,027 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:02:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:02:09,070 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:02:09,071 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:02:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:02:09,084 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:02:09,085 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:02:09,085 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 12:02:09,098 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 12:02:09,103 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 12:02:09,104 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 2 states. [2020-07-01 12:02:09,126 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 2 states. Result 5 states and 6 transitions. Complement of second has 2 states. [2020-07-01 12:02:09,127 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 12:02:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 12:02:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2020-07-01 12:02:09,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 12:02:09,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 12:02:09,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:02:09,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 6 transitions. [2020-07-01 12:02:09,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:02:09,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 3 states and 3 transitions. [2020-07-01 12:02:09,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 12:02:09,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-07-01 12:02:09,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2020-07-01 12:02:09,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:02:09,146 INFO L688 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-07-01 12:02:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2020-07-01 12:02:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2020-07-01 12:02:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:02:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-07-01 12:02:09,175 INFO L711 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-07-01 12:02:09,175 INFO L591 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-07-01 12:02:09,175 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:02:09,175 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2020-07-01 12:02:09,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:02:09,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:02:09,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:02:09,176 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:02:09,176 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:02:09,177 INFO L794 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY [28] ULTIMATE.startENTRY-->L5: Formula: (and (= v_ULTIMATE.start_quot_~x_1 |v_ULTIMATE.start_quot_#in~x_1|) (= v_ULTIMATE.start_quot_~i~0_1 0) (= v_ULTIMATE.start_quot_~y_1 |v_ULTIMATE.start_quot_#in~y_1|) (= |v_ULTIMATE.start_quot_#in~y_1| |v_ULTIMATE.start_main_#t~nondet1_1|) (= |v_ULTIMATE.start_quot_#in~x_1| |v_ULTIMATE.start_main_#t~nondet0_1|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_1, ULTIMATE.start_quot_#res=|v_ULTIMATE.start_quot_#res_1|, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_1, ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_1, ULTIMATE.start_quot_#in~y=|v_ULTIMATE.start_quot_#in~y_1|, ULTIMATE.start_quot_#in~x=|v_ULTIMATE.start_quot_#in~x_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_quot_~y, ULTIMATE.start_quot_#res, ULTIMATE.start_quot_~i~0, ULTIMATE.start_quot_~x, ULTIMATE.start_quot_#in~y, ULTIMATE.start_quot_#in~x] 36#L5 [37] L5-->L6-2: Formula: (> 0 v_ULTIMATE.start_quot_~x_4) InVars {ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_4} OutVars{ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_4} AuxVars[] AssignedVars[] 37#L6-2 [2020-07-01 12:02:09,177 INFO L796 eck$LassoCheckResult]: Loop: 37#L6-2 [34] L6-2-->L6-2: Formula: (and (< 0 v_ULTIMATE.start_quot_~x_7) (< 0 v_ULTIMATE.start_quot_~y_4) (= v_ULTIMATE.start_quot_~x_6 (+ v_ULTIMATE.start_quot_~x_7 (* v_ULTIMATE.start_quot_~y_4 (- 1)))) (= v_ULTIMATE.start_quot_~i~0_4 (+ v_ULTIMATE.start_quot_~i~0_5 1))) InVars {ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_7, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_5, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_4} OutVars{ULTIMATE.start_quot_~x=v_ULTIMATE.start_quot_~x_6, ULTIMATE.start_quot_~i~0=v_ULTIMATE.start_quot_~i~0_4, ULTIMATE.start_quot_~y=v_ULTIMATE.start_quot_~y_4} AuxVars[] AssignedVars[ULTIMATE.start_quot_~x, ULTIMATE.start_quot_~i~0] 37#L6-2 [2020-07-01 12:02:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:09,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1866, now seen corresponding path program 1 times [2020-07-01 12:02:09,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:09,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241565360] [2020-07-01 12:02:09,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:09,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:02:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:09,187 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 2 times [2020-07-01 12:02:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067464144] [2020-07-01 12:02:09,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:02:09,195 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:02:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash 57880, now seen corresponding path program 1 times [2020-07-01 12:02:09,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:02:09,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547765781] [2020-07-01 12:02:09,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:02:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:02:09,236 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 12:02:09,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547765781] [2020-07-01 12:02:09,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:02:09,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:02:09,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556961375] [2020-07-01 12:02:09,273 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:02:09,273 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:02:09,273 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:02:09,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:02:09,274 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:02:09,274 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:09,274 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:02:09,274 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:02:09,274 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:02:09,274 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:02:09,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:02:09,276 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 12:02:09,284 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 12:02:09,325 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:02:09,325 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:09,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:02:09,330 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:09,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:02:09,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:02:09,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:02:09,386 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_quot_~i~0=0} Honda state: {ULTIMATE.start_quot_~i~0=0} Generalized eigenvectors: [{ULTIMATE.start_quot_~i~0=-2}, {ULTIMATE.start_quot_~i~0=3}, {ULTIMATE.start_quot_~i~0=0}] Lambdas: [1, 1, 15] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:09,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:02:09,420 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:02:09,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:02:09,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:02:09,574 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:02:09,577 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:02:09,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:02:09,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:02:09,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:02:09,577 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:02:09,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:09,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:02:09,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:02:09,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:02:09,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:02:09,578 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:02:09,579 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 12:02:09,583 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 12:02:09,632 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:02:09,633 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:09,638 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 12:02:09,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:02:09,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:02:09,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:02:09,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:02:09,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:02:09,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:02:09,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:02:09,644 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:09,678 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 12:02:09,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:02:09,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:02:09,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:02:09,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:02:09,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:02:09,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:02:09,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:02:09,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:02:09,689 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:02:09,689 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:02:09,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:02:09,705 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:02:09,705 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:02:09,706 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_quot_~x) = 1*ULTIMATE.start_quot_~x Supporting invariants [] [2020-07-01 12:02:09,736 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:02:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:02:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:02:09,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:02:09,757 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:02:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:02:09,761 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:02:09,761 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:02:09,761 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 12:02:09,762 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 12:02:09,762 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 12:02:09,762 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states and 3 transitions. cyclomatic complexity: 1 Second operand 2 states. [2020-07-01 12:02:09,768 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states and 3 transitions. cyclomatic complexity: 1. Second operand 2 states. Result 4 states and 4 transitions. Complement of second has 2 states. [2020-07-01 12:02:09,768 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 12:02:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 12:02:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 5 transitions. [2020-07-01 12:02:09,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 12:02:09,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 12:02:09,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:02:09,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:02:09,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4 states and 4 transitions. [2020-07-01 12:02:09,772 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:02:09,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4 states to 0 states and 0 transitions. [2020-07-01 12:02:09,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:02:09,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:02:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:02:09,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:02:09,773 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:02:09,773 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:02:09,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:02:09,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:02:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:02:09,776 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-07-01 12:02:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:02:09,779 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:02:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:02:09,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:02:09,780 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:02:09,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:02:09,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:02:09,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:02:09,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:02:09,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:02:09,781 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:02:09,781 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:02:09,781 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:02:09,781 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:02:09,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:02:09,782 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:02:09,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:02:09,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:02:09 BasicIcfg [2020-07-01 12:02:09,788 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:02:09,790 INFO L168 Benchmark]: Toolchain (without parser) took 2225.31 ms. Allocated memory was 514.9 MB in the beginning and 595.1 MB in the end (delta: 80.2 MB). Free memory was 438.3 MB in the beginning and 539.5 MB in the end (delta: -101.2 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:02:09,791 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:02:09,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.41 ms. Allocated memory was 514.9 MB in the beginning and 567.8 MB in the end (delta: 53.0 MB). Free memory was 438.3 MB in the beginning and 535.3 MB in the end (delta: -96.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.93 ms. Allocated memory is still 567.8 MB. Free memory was 535.3 MB in the beginning and 533.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,793 INFO L168 Benchmark]: Boogie Preprocessor took 19.87 ms. Allocated memory is still 567.8 MB. Free memory was 533.6 MB in the beginning and 532.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,793 INFO L168 Benchmark]: RCFGBuilder took 240.38 ms. Allocated memory is still 567.8 MB. Free memory was 532.5 MB in the beginning and 520.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,794 INFO L168 Benchmark]: BlockEncodingV2 took 73.64 ms. Allocated memory is still 567.8 MB. Free memory was 520.3 MB in the beginning and 515.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,794 INFO L168 Benchmark]: TraceAbstraction took 144.42 ms. Allocated memory is still 567.8 MB. Free memory was 514.9 MB in the beginning and 506.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:02:09,795 INFO L168 Benchmark]: BuchiAutomizer took 1406.84 ms. Allocated memory was 567.8 MB in the beginning and 595.1 MB in the end (delta: 27.3 MB). Free memory was 506.0 MB in the beginning and 539.5 MB in the end (delta: -33.5 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:02:09,799 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 10 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 298.41 ms. Allocated memory was 514.9 MB in the beginning and 567.8 MB in the end (delta: 53.0 MB). Free memory was 438.3 MB in the beginning and 535.3 MB in the end (delta: -96.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.93 ms. Allocated memory is still 567.8 MB. Free memory was 535.3 MB in the beginning and 533.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.87 ms. Allocated memory is still 567.8 MB. Free memory was 533.6 MB in the beginning and 532.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 240.38 ms. Allocated memory is still 567.8 MB. Free memory was 532.5 MB in the beginning and 520.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.64 ms. Allocated memory is still 567.8 MB. Free memory was 520.3 MB in the beginning and 515.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. * TraceAbstraction took 144.42 ms. Allocated memory is still 567.8 MB. Free memory was 514.9 MB in the beginning and 506.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1406.84 ms. Allocated memory was 567.8 MB in the beginning and 595.1 MB in the end (delta: 27.3 MB). Free memory was 506.0 MB in the beginning and 539.5 MB in the end (delta: -33.5 MB). There was no memory consumed. 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: 6]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x and consists of 2 locations. One nondeterministic module has affine ranking function x and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf89 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:02:04.279 ----------------------------------------------- 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_iREk3o/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:02:10.233 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check