Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 01:04:55,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 01:04:55,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 01:04:55,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 01:04:55,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 01:04:55,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 01:04:55,582 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 01:04:55,583 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 01:04:55,585 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 01:04:55,586 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 01:04:55,586 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 01:04:55,587 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 01:04:55,587 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 01:04:55,588 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 01:04:55,589 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 01:04:55,590 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 01:04:55,591 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 01:04:55,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 01:04:55,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 01:04:55,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 01:04:55,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 01:04:55,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 01:04:55,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 01:04:55,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 01:04:55,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 01:04:55,601 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 01:04:55,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 01:04:55,602 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 01:04:55,602 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 01:04:55,603 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 01:04:55,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 01:04:55,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 01:04:55,605 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 01:04:55,605 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 01:04:55,606 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 01:04:55,606 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 01:04:55,606 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 01:04:55,607 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 01:04:55,608 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 01:04:55,608 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 01:04:55,622 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 01:04:55,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 01:04:55,623 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 01:04:55,624 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 01:04:55,624 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 01:04:55,624 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:04:55,624 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 01:04:55,624 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 01:04:55,624 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 01:04:55,625 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 01:04:55,625 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 01:04:55,625 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 01:04:55,625 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 01:04:55,625 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 01:04:55,626 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:04:55,626 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 01:04:55,626 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 01:04:55,626 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 01:04:55,626 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 01:04:55,626 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 01:04:55,627 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 01:04:55,627 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 01:04:55,627 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 01:04:55,627 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 01:04:55,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 01:04:55,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 01:04:55,628 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 01:04:55,628 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 01:04:55,628 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 01:04:55,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 01:04:55,666 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 01:04:55,669 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 01:04:55,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 01:04:55,671 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 01:04:55,672 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 01:04:55,735 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/153700cdd0684b0f9bf133155b8692ad/FLAG671372bd7 [2020-06-22 01:04:56,135 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 01:04:56,136 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 01:04:56,147 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/153700cdd0684b0f9bf133155b8692ad/FLAG671372bd7 [2020-06-22 01:04:56,489 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/153700cdd0684b0f9bf133155b8692ad [2020-06-22 01:04:56,501 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 01:04:56,502 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 01:04:56,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 01:04:56,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 01:04:56,507 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 01:04:56,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:56,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fc6de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56, skipping insertion in model container [2020-06-22 01:04:56,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:56,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 01:04:56,557 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 01:04:56,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:04:56,877 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 01:04:56,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:04:56,966 INFO L195 MainTranslator]: Completed translation [2020-06-22 01:04:56,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56 WrapperNode [2020-06-22 01:04:56,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 01:04:56,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 01:04:56,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 01:04:56,967 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 01:04:56,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:56,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 01:04:57,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 01:04:57,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 01:04:57,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 01:04:57,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (1/1) ... [2020-06-22 01:04:57,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 01:04:57,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 01:04:57,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 01:04:57,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 01:04:57,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (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 01:04:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-06-22 01:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-06-22 01:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-06-22 01:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-06-22 01:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 01:04:57,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 01:04:57,412 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 01:04:57,413 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 01:04:57,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:04:57 BoogieIcfgContainer [2020-06-22 01:04:57,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 01:04:57,415 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 01:04:57,415 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 01:04:57,417 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 01:04:57,418 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:04:57" (1/1) ... [2020-06-22 01:04:57,434 INFO L313 BlockEncoder]: Initial Icfg 45 locations, 50 edges [2020-06-22 01:04:57,436 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 01:04:57,437 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 01:04:57,437 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 01:04:57,438 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:04:57,440 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 01:04:57,440 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 01:04:57,441 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 01:04:57,465 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 01:04:57,497 INFO L200 BlockEncoder]: SBE split 25 edges [2020-06-22 01:04:57,503 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 01:04:57,504 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:04:57,523 INFO L100 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2020-06-22 01:04:57,526 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 01:04:57,527 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 01:04:57,527 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:04:57,528 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 01:04:57,528 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 01:04:57,529 INFO L313 BlockEncoder]: Encoded RCFG 38 locations, 74 edges [2020-06-22 01:04:57,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:04:57 BasicIcfg [2020-06-22 01:04:57,529 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 01:04:57,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 01:04:57,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 01:04:57,534 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 01:04:57,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 01:04:56" (1/4) ... [2020-06-22 01:04:57,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a78caa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:04:57, skipping insertion in model container [2020-06-22 01:04:57,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:04:56" (2/4) ... [2020-06-22 01:04:57,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a78caa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:04:57, skipping insertion in model container [2020-06-22 01:04:57,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:04:57" (3/4) ... [2020-06-22 01:04:57,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a78caa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:04:57, skipping insertion in model container [2020-06-22 01:04:57,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:04:57" (4/4) ... [2020-06-22 01:04:57,537 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:04:57,547 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 01:04:57,555 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-06-22 01:04:57,571 INFO L257 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-06-22 01:04:57,600 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:04:57,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 01:04:57,601 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 01:04:57,601 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:04:57,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:04:57,602 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:04:57,602 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 01:04:57,602 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:04:57,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 01:04:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-06-22 01:04:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-06-22 01:04:57,623 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:57,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-06-22 01:04:57,624 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 139406, now seen corresponding path program 1 times [2020-06-22 01:04:57,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:57,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:57,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:57,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:57,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:57,791 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 01:04:57,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:57,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 01:04:57,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 01:04:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:04:57,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:04:57,817 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-06-22 01:04:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:58,125 INFO L93 Difference]: Finished difference Result 40 states and 79 transitions. [2020-06-22 01:04:58,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:04:58,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-06-22 01:04:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:58,140 INFO L225 Difference]: With dead ends: 40 [2020-06-22 01:04:58,140 INFO L226 Difference]: Without dead ends: 33 [2020-06-22 01:04:58,143 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 01:04:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-06-22 01:04:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-06-22 01:04:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-06-22 01:04:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 60 transitions. [2020-06-22 01:04:58,182 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 60 transitions. Word has length 3 [2020-06-22 01:04:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:58,183 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 60 transitions. [2020-06-22 01:04:58,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 01:04:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 60 transitions. [2020-06-22 01:04:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-06-22 01:04:58,183 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:58,184 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-06-22 01:04:58,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash 139408, now seen corresponding path program 1 times [2020-06-22 01:04:58,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:58,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:58,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:58,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:58,228 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 01:04:58,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:58,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 01:04:58,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 01:04:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:04:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:04:58,231 INFO L87 Difference]: Start difference. First operand 31 states and 60 transitions. Second operand 3 states. [2020-06-22 01:04:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:58,373 INFO L93 Difference]: Finished difference Result 34 states and 70 transitions. [2020-06-22 01:04:58,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:04:58,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-06-22 01:04:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:58,375 INFO L225 Difference]: With dead ends: 34 [2020-06-22 01:04:58,375 INFO L226 Difference]: Without dead ends: 29 [2020-06-22 01:04:58,376 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 01:04:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-06-22 01:04:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-06-22 01:04:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-06-22 01:04:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 50 transitions. [2020-06-22 01:04:58,380 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 50 transitions. Word has length 3 [2020-06-22 01:04:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:58,381 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 50 transitions. [2020-06-22 01:04:58,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 01:04:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 50 transitions. [2020-06-22 01:04:58,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 01:04:58,382 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:58,382 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:04:58,382 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 198300982, now seen corresponding path program 1 times [2020-06-22 01:04:58,382 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:58,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:58,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:58,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:58,433 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 01:04:58,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:58,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 01:04:58,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 01:04:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 01:04:58,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 01:04:58,434 INFO L87 Difference]: Start difference. First operand 26 states and 50 transitions. Second operand 4 states. [2020-06-22 01:04:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:58,561 INFO L93 Difference]: Finished difference Result 51 states and 100 transitions. [2020-06-22 01:04:58,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 01:04:58,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-06-22 01:04:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:58,562 INFO L225 Difference]: With dead ends: 51 [2020-06-22 01:04:58,563 INFO L226 Difference]: Without dead ends: 38 [2020-06-22 01:04:58,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-06-22 01:04:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-06-22 01:04:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-06-22 01:04:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-06-22 01:04:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 65 transitions. [2020-06-22 01:04:58,570 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 65 transitions. Word has length 8 [2020-06-22 01:04:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:58,571 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 65 transitions. [2020-06-22 01:04:58,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 01:04:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 65 transitions. [2020-06-22 01:04:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 01:04:58,572 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:58,572 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:04:58,572 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 198301013, now seen corresponding path program 1 times [2020-06-22 01:04:58,572 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:58,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:58,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:58,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:58,625 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 01:04:58,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:58,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 01:04:58,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 01:04:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 01:04:58,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 01:04:58,627 INFO L87 Difference]: Start difference. First operand 31 states and 65 transitions. Second operand 4 states. [2020-06-22 01:04:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:58,811 INFO L93 Difference]: Finished difference Result 36 states and 66 transitions. [2020-06-22 01:04:58,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 01:04:58,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-06-22 01:04:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:58,812 INFO L225 Difference]: With dead ends: 36 [2020-06-22 01:04:58,813 INFO L226 Difference]: Without dead ends: 33 [2020-06-22 01:04:58,813 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-06-22 01:04:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-06-22 01:04:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-06-22 01:04:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-06-22 01:04:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. [2020-06-22 01:04:58,818 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 59 transitions. Word has length 8 [2020-06-22 01:04:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:58,819 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 59 transitions. [2020-06-22 01:04:58,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 01:04:58,819 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 59 transitions. [2020-06-22 01:04:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-06-22 01:04:58,819 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:58,820 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:04:58,820 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash 198301016, now seen corresponding path program 1 times [2020-06-22 01:04:58,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:58,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:58,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:58,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:58,880 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 01:04:58,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:58,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 01:04:58,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 01:04:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 01:04:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 01:04:58,882 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 4 states. [2020-06-22 01:04:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:59,044 INFO L93 Difference]: Finished difference Result 48 states and 93 transitions. [2020-06-22 01:04:59,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 01:04:59,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-06-22 01:04:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:59,046 INFO L225 Difference]: With dead ends: 48 [2020-06-22 01:04:59,046 INFO L226 Difference]: Without dead ends: 44 [2020-06-22 01:04:59,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-06-22 01:04:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-06-22 01:04:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-06-22 01:04:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-06-22 01:04:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 77 transitions. [2020-06-22 01:04:59,052 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 77 transitions. Word has length 8 [2020-06-22 01:04:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:59,052 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 77 transitions. [2020-06-22 01:04:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 01:04:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 77 transitions. [2020-06-22 01:04:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-06-22 01:04:59,053 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:59,053 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:04:59,054 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:59,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1636462837, now seen corresponding path program 1 times [2020-06-22 01:04:59,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:59,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:59,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:59,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:59,127 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 01:04:59,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:04:59,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 01:04:59,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 01:04:59,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 01:04:59,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 01:04:59,128 INFO L87 Difference]: Start difference. First operand 39 states and 77 transitions. Second operand 4 states. [2020-06-22 01:04:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:04:59,208 INFO L93 Difference]: Finished difference Result 39 states and 77 transitions. [2020-06-22 01:04:59,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:04:59,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-06-22 01:04:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 01:04:59,209 INFO L225 Difference]: With dead ends: 39 [2020-06-22 01:04:59,209 INFO L226 Difference]: Without dead ends: 38 [2020-06-22 01:04:59,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 01:04:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-06-22 01:04:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-06-22 01:04:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-06-22 01:04:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 76 transitions. [2020-06-22 01:04:59,215 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 76 transitions. Word has length 10 [2020-06-22 01:04:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 01:04:59,215 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 76 transitions. [2020-06-22 01:04:59,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 01:04:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 76 transitions. [2020-06-22 01:04:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-06-22 01:04:59,216 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 01:04:59,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:04:59,216 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION]=== [2020-06-22 01:04:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:04:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -117356179, now seen corresponding path program 1 times [2020-06-22 01:04:59,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:04:59,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:04:59,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:59,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:59,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:04:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:04:59,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-22 01:04:59,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-22 01:04:59,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:04:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:04:59,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-06-22 01:04:59,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:04:59,358 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-06-22 01:04:59,359 INFO L427 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-06-22 01:04:59,362 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-06-22 01:04:59,362 INFO L427 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-06-22 01:04:59,378 INFO L217 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-06-22 01:04:59,588 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-22 01:04:59,588 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.select(SmtUtils.java:1322) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.multiDimensionalSelect(SmtUtils.java:363) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.multiDimensionalStore(SmtUtils.java:379) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.MultiDimensionalStore.(MultiDimensionalStore.java:73) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:101) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:269) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:146) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:191) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:177) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:81) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:169) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostElimation(ArrayIndexBasedCostEstimation.java:58) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:49) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.computeCostEtimation(ElimStorePlain.java:450) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:386) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:212) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:305) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-06-22 01:04:59,591 INFO L168 Benchmark]: Toolchain (without parser) took 3089.66 ms. Allocated memory was 649.6 MB in the beginning and 654.3 MB in the end (delta: 4.7 MB). Free memory was 557.5 MB in the beginning and 368.2 MB in the end (delta: 189.2 MB). Peak memory consumption was 193.9 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,592 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 01:04:59,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.49 ms. Allocated memory was 649.6 MB in the beginning and 654.3 MB in the end (delta: 4.7 MB). Free memory was 557.5 MB in the beginning and 601.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.97 ms. Allocated memory is still 654.3 MB. Free memory was 601.3 MB in the beginning and 599.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,594 INFO L168 Benchmark]: Boogie Preprocessor took 27.91 ms. Allocated memory is still 654.3 MB. Free memory was 599.9 MB in the beginning and 597.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,594 INFO L168 Benchmark]: RCFGBuilder took 371.74 ms. Allocated memory is still 654.3 MB. Free memory was 597.2 MB in the beginning and 569.7 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,595 INFO L168 Benchmark]: BlockEncodingV2 took 114.81 ms. Allocated memory is still 654.3 MB. Free memory was 569.7 MB in the beginning and 560.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,595 INFO L168 Benchmark]: TraceAbstraction took 2060.18 ms. Allocated memory is still 654.3 MB. Free memory was 558.9 MB in the beginning and 368.2 MB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 50.3 GB. [2020-06-22 01:04:59,599 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 45 locations, 50 edges - StatisticsResult: Encoded RCFG 38 locations, 74 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 463.49 ms. Allocated memory was 649.6 MB in the beginning and 654.3 MB in the end (delta: 4.7 MB). Free memory was 557.5 MB in the beginning and 601.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 46.97 ms. Allocated memory is still 654.3 MB. Free memory was 601.3 MB in the beginning and 599.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 27.91 ms. Allocated memory is still 654.3 MB. Free memory was 599.9 MB in the beginning and 597.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. * RCFGBuilder took 371.74 ms. Allocated memory is still 654.3 MB. Free memory was 597.2 MB in the beginning and 569.7 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 114.81 ms. Allocated memory is still 654.3 MB. Free memory was 569.7 MB in the beginning and 560.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 2060.18 ms. Allocated memory is still 654.3 MB. Free memory was 558.9 MB in the beginning and 368.2 MB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.select(SmtUtils.java:1322) RESULT: Ultimate could not prove your program: Toolchain returned no result. !SESSION 2020-06-22 01:04:53.067 ----------------------------------------------- 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 01:04:59.832 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check