MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:28:39,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:28:39,410 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:28:39,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:28:39,422 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:28:39,423 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:28:39,425 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:28:39,426 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:28:39,428 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:28:39,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:28:39,429 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:28:39,430 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:28:39,430 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:28:39,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:28:39,432 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:28:39,433 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:28:39,434 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:28:39,436 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:28:39,438 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:28:39,440 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:28:39,441 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:28:39,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:28:39,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:28:39,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:28:39,444 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:28:39,445 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:28:39,445 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:28:39,446 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:28:39,446 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:28:39,447 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:28:39,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:28:39,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:28:39,449 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:28:39,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:28:39,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:28:39,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:28:39,451 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:28:39,452 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:28:39,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:28:39,452 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 08:28:39,468 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:28:39,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:28:39,469 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:28:39,469 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:28:39,470 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:28:39,470 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:39,470 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:28:39,470 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:28:39,470 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:28:39,471 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:28:39,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:28:39,472 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:28:39,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:28:39,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:28:39,472 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:28:39,473 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:28:39,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:28:39,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:28:39,473 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:28:39,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:28:39,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:28:39,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:28:39,474 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:28:39,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:28:39,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:28:39,514 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:28:39,518 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:28:39,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:28:39,520 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:28:39,520 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 08:28:39,594 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/320e951c64364f6dbee512907879e773/FLAGb4e6ff10a [2020-06-22 08:28:39,945 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:28:39,946 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 08:28:39,946 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-06-22 08:28:39,954 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/320e951c64364f6dbee512907879e773/FLAGb4e6ff10a [2020-06-22 08:28:40,347 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/320e951c64364f6dbee512907879e773 [2020-06-22 08:28:40,359 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:28:40,361 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:28:40,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:40,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:28:40,366 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:28:40,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337b2880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40, skipping insertion in model container [2020-06-22 08:28:40,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:28:40,395 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:28:40,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:40,627 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:28:40,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:28:40,663 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:28:40,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40 WrapperNode [2020-06-22 08:28:40,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:28:40,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:40,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:28:40,665 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:28:40,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:28:40,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:28:40,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:28:40,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:28:40,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (1/1) ... [2020-06-22 08:28:40,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:28:40,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:28:40,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:28:40,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:28:40,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (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 [2020-06-22 08:28:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 08:28:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-06-22 08:28:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:28:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:28:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 08:28:41,103 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:28:41,103 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. [2020-06-22 08:28:41,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41 BoogieIcfgContainer [2020-06-22 08:28:41,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:28:41,105 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:28:41,105 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:28:41,107 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:28:41,108 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (1/1) ... [2020-06-22 08:28:41,129 INFO L313 BlockEncoder]: Initial Icfg 48 locations, 55 edges [2020-06-22 08:28:41,130 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:28:41,131 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:28:41,132 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:28:41,132 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:28:41,134 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:28:41,135 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:28:41,135 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:28:41,163 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:28:41,199 INFO L200 BlockEncoder]: SBE split 22 edges [2020-06-22 08:28:41,204 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,206 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,257 INFO L100 BaseMinimizeStates]: Removed 22 edges and 11 locations by large block encoding [2020-06-22 08:28:41,260 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 08:28:41,262 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:28:41,263 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:28:41,264 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:28:41,264 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:28:41,265 INFO L313 BlockEncoder]: Encoded RCFG 36 locations, 73 edges [2020-06-22 08:28:41,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41 BasicIcfg [2020-06-22 08:28:41,266 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:28:41,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:28:41,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:28:41,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:28:41,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:28:40" (1/4) ... [2020-06-22 08:28:41,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59d68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:28:40" (2/4) ... [2020-06-22 08:28:41,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59d68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:28:41" (3/4) ... [2020-06-22 08:28:41,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59d68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:41, skipping insertion in model container [2020-06-22 08:28:41,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:28:41" (4/4) ... [2020-06-22 08:28:41,274 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:28:41,284 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:28:41,292 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-06-22 08:28:41,309 INFO L257 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-06-22 08:28:41,339 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:28:41,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:28:41,340 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:28:41,340 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:28:41,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:28:41,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:28:41,341 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:28:41,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:28:41,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:28:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-06-22 08:28:41,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 08:28:41,365 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:41,365 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 08:28:41,366 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash 7804023, now seen corresponding path program 1 times [2020-06-22 08:28:41,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:41,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:41,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:41,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:41,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:41,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:28:41,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 08:28:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 08:28:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:28:41,567 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-06-22 08:28:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:41,726 INFO L93 Difference]: Finished difference Result 63 states and 127 transitions. [2020-06-22 08:28:41,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 08:28:41,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-06-22 08:28:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:41,741 INFO L225 Difference]: With dead ends: 63 [2020-06-22 08:28:41,742 INFO L226 Difference]: Without dead ends: 36 [2020-06-22 08:28:41,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:28:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-06-22 08:28:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-06-22 08:28:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-06-22 08:28:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2020-06-22 08:28:41,785 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 4 [2020-06-22 08:28:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:41,786 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2020-06-22 08:28:41,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 08:28:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2020-06-22 08:28:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 08:28:41,787 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:41,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 08:28:41,787 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:41,787 INFO L82 PathProgramCache]: Analyzing trace with hash 7804024, now seen corresponding path program 1 times [2020-06-22 08:28:41,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:41,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:41,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:41,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:41,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:41,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 08:28:41,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:28:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:28:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:41,819 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2020-06-22 08:28:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:41,949 INFO L93 Difference]: Finished difference Result 36 states and 69 transitions. [2020-06-22 08:28:41,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:28:41,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-06-22 08:28:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:41,950 INFO L225 Difference]: With dead ends: 36 [2020-06-22 08:28:41,951 INFO L226 Difference]: Without dead ends: 34 [2020-06-22 08:28:41,952 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-06-22 08:28:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-06-22 08:28:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-06-22 08:28:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 67 transitions. [2020-06-22 08:28:41,958 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 67 transitions. Word has length 4 [2020-06-22 08:28:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:41,958 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 67 transitions. [2020-06-22 08:28:41,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:28:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 67 transitions. [2020-06-22 08:28:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-06-22 08:28:41,958 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:41,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-06-22 08:28:41,959 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash 7804021, now seen corresponding path program 1 times [2020-06-22 08:28:41,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:41,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:41,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:41,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:41,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:41,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 08:28:41,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:28:41,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:28:41,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:41,987 INFO L87 Difference]: Start difference. First operand 34 states and 67 transitions. Second operand 3 states. [2020-06-22 08:28:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,079 INFO L93 Difference]: Finished difference Result 34 states and 67 transitions. [2020-06-22 08:28:42,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:28:42,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-06-22 08:28:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,080 INFO L225 Difference]: With dead ends: 34 [2020-06-22 08:28:42,080 INFO L226 Difference]: Without dead ends: 32 [2020-06-22 08:28:42,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:28:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-06-22 08:28:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-06-22 08:28:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-06-22 08:28:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 63 transitions. [2020-06-22 08:28:42,086 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 63 transitions. Word has length 4 [2020-06-22 08:28:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,087 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 63 transitions. [2020-06-22 08:28:42,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:28:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 63 transitions. [2020-06-22 08:28:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 08:28:42,087 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,087 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,088 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 276195753, now seen corresponding path program 1 times [2020-06-22 08:28:42,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:42,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:42,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-06-22 08:28:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-06-22 08:28:42,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-06-22 08:28:42,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-06-22 08:28:42,179 INFO L87 Difference]: Start difference. First operand 32 states and 63 transitions. Second operand 6 states. [2020-06-22 08:28:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,650 INFO L93 Difference]: Finished difference Result 107 states and 227 transitions. [2020-06-22 08:28:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-06-22 08:28:42,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-06-22 08:28:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,653 INFO L225 Difference]: With dead ends: 107 [2020-06-22 08:28:42,653 INFO L226 Difference]: Without dead ends: 105 [2020-06-22 08:28:42,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-06-22 08:28:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-06-22 08:28:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 30. [2020-06-22 08:28:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-06-22 08:28:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. [2020-06-22 08:28:42,663 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 59 transitions. Word has length 8 [2020-06-22 08:28:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,663 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 59 transitions. [2020-06-22 08:28:42,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-06-22 08:28:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 59 transitions. [2020-06-22 08:28:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 08:28:42,664 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,664 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,664 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,664 INFO L82 PathProgramCache]: Analyzing trace with hash 276195755, now seen corresponding path program 1 times [2020-06-22 08:28:42,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:42,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:42,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 08:28:42,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-06-22 08:28:42,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 08:28:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-22 08:28:42,724 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 5 states. [2020-06-22 08:28:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:42,878 INFO L93 Difference]: Finished difference Result 55 states and 107 transitions. [2020-06-22 08:28:42,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-06-22 08:28:42,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-06-22 08:28:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:42,880 INFO L225 Difference]: With dead ends: 55 [2020-06-22 08:28:42,880 INFO L226 Difference]: Without dead ends: 53 [2020-06-22 08:28:42,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-06-22 08:28:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-06-22 08:28:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2020-06-22 08:28:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-06-22 08:28:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 66 transitions. [2020-06-22 08:28:42,888 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 66 transitions. Word has length 8 [2020-06-22 08:28:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:42,889 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 66 transitions. [2020-06-22 08:28:42,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-06-22 08:28:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 66 transitions. [2020-06-22 08:28:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 08:28:42,890 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:42,890 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:28:42,890 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash 276195756, now seen corresponding path program 1 times [2020-06-22 08:28:42,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:42,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:42,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:42,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:42,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:42,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-06-22 08:28:42,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-06-22 08:28:42,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-06-22 08:28:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-06-22 08:28:42,986 INFO L87 Difference]: Start difference. First operand 33 states and 66 transitions. Second operand 7 states. [2020-06-22 08:28:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:43,594 INFO L93 Difference]: Finished difference Result 155 states and 317 transitions. [2020-06-22 08:28:43,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-06-22 08:28:43,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-06-22 08:28:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:43,596 INFO L225 Difference]: With dead ends: 155 [2020-06-22 08:28:43,597 INFO L226 Difference]: Without dead ends: 153 [2020-06-22 08:28:43,597 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-06-22 08:28:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-06-22 08:28:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 40. [2020-06-22 08:28:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-06-22 08:28:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 77 transitions. [2020-06-22 08:28:43,608 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 77 transitions. Word has length 8 [2020-06-22 08:28:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:43,608 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 77 transitions. [2020-06-22 08:28:43,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-06-22 08:28:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 77 transitions. [2020-06-22 08:28:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 08:28:43,609 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:43,609 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:28:43,609 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:43,610 INFO L82 PathProgramCache]: Analyzing trace with hash 304824907, now seen corresponding path program 1 times [2020-06-22 08:28:43,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:43,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:43,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:43,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:43,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:28:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:28:43,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:28:43,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-06-22 08:28:43,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-06-22 08:28:43,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-06-22 08:28:43,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-06-22 08:28:43,684 INFO L87 Difference]: Start difference. First operand 40 states and 77 transitions. Second operand 7 states. [2020-06-22 08:28:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:28:43,866 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2020-06-22 08:28:43,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-06-22 08:28:43,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-06-22 08:28:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:28:43,868 INFO L225 Difference]: With dead ends: 60 [2020-06-22 08:28:43,868 INFO L226 Difference]: Without dead ends: 58 [2020-06-22 08:28:43,868 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-06-22 08:28:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-06-22 08:28:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-06-22 08:28:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-06-22 08:28:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 64 transitions. [2020-06-22 08:28:43,874 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 64 transitions. Word has length 8 [2020-06-22 08:28:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:28:43,874 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 64 transitions. [2020-06-22 08:28:43,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-06-22 08:28:43,875 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 64 transitions. [2020-06-22 08:28:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-06-22 08:28:43,875 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:28:43,875 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:28:43,876 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-06-22 08:28:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:28:43,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1011313216, now seen corresponding path program 1 times [2020-06-22 08:28:43,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:28:43,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:28:43,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:43,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:28:43,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:28:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:28:43,932 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 08:28:43,981 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 08:28:43,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:28:43 BasicIcfg [2020-06-22 08:28:43,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:28:43,984 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:28:43,984 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:28:43,988 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:28:43,988 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:43,988 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:43,988 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:43,988 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:43,988 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:28:43,989 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:28:43,989 INFO L168 Benchmark]: Toolchain (without parser) took 3629.54 ms. Allocated memory was 649.6 MB in the beginning and 751.3 MB in the end (delta: 101.7 MB). Free memory was 564.8 MB in the beginning and 576.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 90.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,991 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:28:43,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.83 ms. Allocated memory was 649.6 MB in the beginning and 684.2 MB in the end (delta: 34.6 MB). Free memory was 564.8 MB in the beginning and 647.3 MB in the end (delta: -82.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.53 ms. Allocated memory is still 684.2 MB. Free memory was 647.3 MB in the beginning and 645.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,993 INFO L168 Benchmark]: Boogie Preprocessor took 26.67 ms. Allocated memory is still 684.2 MB. Free memory was 645.2 MB in the beginning and 643.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,993 INFO L168 Benchmark]: RCFGBuilder took 369.91 ms. Allocated memory is still 684.2 MB. Free memory was 643.0 MB in the beginning and 616.6 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,994 INFO L168 Benchmark]: BlockEncodingV2 took 160.63 ms. Allocated memory is still 684.2 MB. Free memory was 616.6 MB in the beginning and 603.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,994 INFO L168 Benchmark]: TraceAbstraction took 2717.28 ms. Allocated memory was 684.2 MB in the beginning and 751.3 MB in the end (delta: 67.1 MB). Free memory was 603.6 MB in the beginning and 576.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:28:43,995 INFO L168 Benchmark]: BuchiAutomizer took 4.31 ms. Allocated memory is still 751.3 MB. Free memory is still 576.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:28:43,999 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 48 locations, 55 edges - StatisticsResult: Encoded RCFG 36 locations, 73 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 302.83 ms. Allocated memory was 649.6 MB in the beginning and 684.2 MB in the end (delta: 34.6 MB). Free memory was 564.8 MB in the beginning and 647.3 MB in the end (delta: -82.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 42.53 ms. Allocated memory is still 684.2 MB. Free memory was 647.3 MB in the beginning and 645.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 26.67 ms. Allocated memory is still 684.2 MB. Free memory was 645.2 MB in the beginning and 643.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 369.91 ms. Allocated memory is still 684.2 MB. Free memory was 643.0 MB in the beginning and 616.6 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 160.63 ms. Allocated memory is still 684.2 MB. Free memory was 616.6 MB in the beginning and 603.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 2717.28 ms. Allocated memory was 684.2 MB in the beginning and 751.3 MB in the end (delta: 67.1 MB). Free memory was 603.6 MB in the beginning and 576.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.31 ms. Allocated memory is still 751.3 MB. Free memory is still 576.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L12] int length = __VERIFIER_nondet_int(); [L13] COND FALSE !(length < 1) [L16] char* nondetString = (char*) malloc(length * sizeof(char)); [L17] nondetString[length-1] = '\0' [L18] return nondetString; [L12] int length = __VERIFIER_nondet_int(); [L13] COND TRUE length < 1 [L14] length = 1 [L16] char* nondetString = (char*) malloc(length * sizeof(char)); [L17] nondetString[length-1] = '\0' [L18] return nondetString; [L27] const char *sc1; [L28] const char *s; [L29] int c; [L30] sc1 = s1 [L30] EXPR \read(*sc1) [L30] COND FALSE !(*sc1 != '\0') [L38] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 16 error locations. UNSAFE Result, 2.6s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 1411 SDslu, 520 SDs, 0 SdLazy, 1147 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 233 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 08:28:37.084 ----------------------------------------------- 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 -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 08:28:44.231 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check