java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum_array.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-299a4a8 [2018-12-04 11:57:36,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-04 11:57:36,432 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-04 11:57:36,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-04 11:57:36,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-04 11:57:36,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-04 11:57:36,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-04 11:57:36,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-04 11:57:36,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-04 11:57:36,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-04 11:57:36,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-04 11:57:36,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-04 11:57:36,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-04 11:57:36,458 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-04 11:57:36,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-04 11:57:36,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-04 11:57:36,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-04 11:57:36,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-04 11:57:36,465 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-04 11:57:36,467 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-04 11:57:36,468 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-04 11:57:36,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-04 11:57:36,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-04 11:57:36,472 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-04 11:57:36,472 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-04 11:57:36,473 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-04 11:57:36,474 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-04 11:57:36,475 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-04 11:57:36,475 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-04 11:57:36,477 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-04 11:57:36,477 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-04 11:57:36,478 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-04 11:57:36,478 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-04 11:57:36,478 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-04 11:57:36,479 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-04 11:57:36,480 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-04 11:57:36,480 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-04 11:57:36,493 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-04 11:57:36,494 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-04 11:57:36,494 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-04 11:57:36,495 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-04 11:57:36,495 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-04 11:57:36,495 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-04 11:57:36,495 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-04 11:57:36,495 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-04 11:57:36,496 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-04 11:57:36,497 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-04 11:57:36,497 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-04 11:57:36,498 INFO L133 SettingsManager]: * Use SBE=true [2018-12-04 11:57:36,498 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-04 11:57:36,498 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-04 11:57:36,498 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-04 11:57:36,498 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-04 11:57:36,499 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-04 11:57:36,499 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-04 11:57:36,499 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-04 11:57:36,499 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-04 11:57:36,499 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-04 11:57:36,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-04 11:57:36,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-04 11:57:36,500 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-04 11:57:36,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-04 11:57:36,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-04 11:57:36,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-04 11:57:36,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-04 11:57:36,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-04 11:57:36,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-04 11:57:36,501 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-04 11:57:36,501 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-04 11:57:36,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-04 11:57:36,502 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-04 11:57:36,502 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-04 11:57:36,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-04 11:57:36,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-04 11:57:36,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-04 11:57:36,560 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-04 11:57:36,560 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-04 11:57:36,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum_array.i_3.bpl [2018-12-04 11:57:36,561 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum_array.i_3.bpl' [2018-12-04 11:57:36,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-04 11:57:36,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-04 11:57:36,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-04 11:57:36,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-04 11:57:36,630 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-04 11:57:36,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-04 11:57:36,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-04 11:57:36,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-04 11:57:36,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-04 11:57:36,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... [2018-12-04 11:57:36,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-04 11:57:36,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-04 11:57:36,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-04 11:57:36,713 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-04 11:57:36,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-04 11:57:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-04 11:57:36,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-04 11:57:36,978 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-04 11:57:36,978 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-04 11:57:36,979 INFO L202 PluginConnector]: Adding new model sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 11:57:36 BoogieIcfgContainer [2018-12-04 11:57:36,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-04 11:57:36,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-04 11:57:36,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-04 11:57:36,984 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-04 11:57:36,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.12 11:57:36" (1/2) ... [2018-12-04 11:57:36,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9e5014 and model type sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.12 11:57:36, skipping insertion in model container [2018-12-04 11:57:36,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.12 11:57:36" (2/2) ... [2018-12-04 11:57:36,987 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array.i_3.bpl [2018-12-04 11:57:36,996 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-04 11:57:37,004 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-04 11:57:37,018 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-04 11:57:37,050 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-04 11:57:37,050 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-04 11:57:37,051 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-04 11:57:37,051 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-04 11:57:37,051 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-04 11:57:37,051 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-04 11:57:37,051 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-04 11:57:37,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-04 11:57:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-12-04 11:57:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-04 11:57:37,074 INFO L394 BasicCegarLoop]: Found error trace [2018-12-04 11:57:37,075 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-04 11:57:37,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-04 11:57:37,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-04 11:57:37,083 INFO L82 PathProgramCache]: Analyzing trace with hash 28790250, now seen corresponding path program 1 times [2018-12-04 11:57:37,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-04 11:57:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-04 11:57:37,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-04 11:57:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-04 11:57:37,134 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-04 11:57:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-04 11:57:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-04 11:57:37,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-04 11:57:37,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-04 11:57:37,413 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-04 11:57:37,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-04 11:57:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-04 11:57:37,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-04 11:57:37,433 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-12-04 11:57:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-04 11:57:37,622 INFO L93 Difference]: Finished difference Result 17 states and 26 transitions. [2018-12-04 11:57:37,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-04 11:57:37,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-12-04 11:57:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-04 11:57:37,639 INFO L225 Difference]: With dead ends: 17 [2018-12-04 11:57:37,639 INFO L226 Difference]: Without dead ends: 9 [2018-12-04 11:57:37,642 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-04 11:57:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-04 11:57:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-04 11:57:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-04 11:57:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-12-04 11:57:37,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2018-12-04 11:57:37,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-04 11:57:37,679 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-12-04 11:57:37,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-04 11:57:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-12-04 11:57:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-04 11:57:37,680 INFO L394 BasicCegarLoop]: Found error trace [2018-12-04 11:57:37,680 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-04 11:57:37,681 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-04 11:57:37,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-04 11:57:37,681 INFO L82 PathProgramCache]: Analyzing trace with hash 266557342, now seen corresponding path program 1 times [2018-12-04 11:57:37,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-04 11:57:37,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-04 11:57:37,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-04 11:57:37,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-04 11:57:37,683 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-04 11:57:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-04 11:57:38,177 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 5 [2018-12-04 11:57:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-04 11:57:38,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-04 11:57:38,319 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-04 11:57:38,320 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 9 with the following transitions: [2018-12-04 11:57:38,322 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [21], [23] [2018-12-04 11:57:38,387 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-04 11:57:38,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-04 11:57:38,495 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-12-04 11:58:01,369 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-04 11:58:01,371 INFO L272 AbstractInterpreter]: Visited 8 different actions 74 times. Merged at 3 different actions 33 times. Widened at 3 different actions 24 times. Found 36 fixpoints after 6 different actions. Largest state had 0 variables. [2018-12-04 11:58:01,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-04 11:58:01,413 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-04 11:58:01,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-04 11:58:01,414 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-04 11:58:01,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-04 11:58:01,438 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-04 11:58:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-04 11:58:01,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-04 11:58:01,625 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-12-04 11:58:01,626 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-04 11:58:01,715 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-04 11:58:01,715 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2018-12-04 11:58:01,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-12-04 11:58:01,782 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-04 11:58:01,876 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-04 11:58:01,877 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2018-12-04 11:58:01,948 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 17 [2018-12-04 11:58:01,948 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-04 11:58:02,007 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-04 11:58:02,007 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:24 [2018-12-04 11:58:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-04 11:58:02,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-04 11:58:02,087 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-12-04 11:58:02,088 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-04 11:58:02,090 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-04 11:58:02,090 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:5 [2018-12-04 11:58:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-04 11:58:02,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-04 11:58:02,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2018-12-04 11:58:02,121 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-04 11:58:02,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-04 11:58:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-04 11:58:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-04 11:58:02,124 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 5 states. [2018-12-04 11:58:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-04 11:58:02,155 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2018-12-04 11:58:02,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-04 11:58:02,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-12-04 11:58:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-04 11:58:02,156 INFO L225 Difference]: With dead ends: 9 [2018-12-04 11:58:02,156 INFO L226 Difference]: Without dead ends: 0 [2018-12-04 11:58:02,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-04 11:58:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-04 11:58:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-04 11:58:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-04 11:58:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-04 11:58:02,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-12-04 11:58:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-04 11:58:02,159 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-04 11:58:02,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-04 11:58:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-04 11:58:02,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-04 11:58:02,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-04 11:58:02,190 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 92) no Hoare annotation was computed. [2018-12-04 11:58:02,190 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 92) no Hoare annotation was computed. [2018-12-04 11:58:02,190 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 92) no Hoare annotation was computed. [2018-12-04 11:58:02,191 INFO L444 ceAbstractionStarter]: At program point L89(lines 56 89) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~6 0) (<= 0 ULTIMATE.start_main_~i~6)) (= (select ULTIMATE.start_main_~C~6 0) (+ (select ULTIMATE.start_main_~B~6 0) (select ULTIMATE.start_main_~A~6 0)))) [2018-12-04 11:58:02,191 INFO L444 ceAbstractionStarter]: At program point L82(lines 82 90) the Hoare annotation is: false [2018-12-04 11:58:02,191 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 91) no Hoare annotation was computed. [2018-12-04 11:58:02,191 INFO L451 ceAbstractionStarter]: At program point L47(lines 28 47) the Hoare annotation is: true [2018-12-04 11:58:02,191 INFO L451 ceAbstractionStarter]: At program point L66(lines 37 66) the Hoare annotation is: true [2018-12-04 11:58:02,200 INFO L202 PluginConnector]: Adding new model sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.12 11:58:02 BoogieIcfgContainer [2018-12-04 11:58:02,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-04 11:58:02,201 INFO L168 Benchmark]: Toolchain (without parser) took 25573.11 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -440.9 MB). Peak memory consumption was 841.6 MB. Max. memory is 7.1 GB. [2018-12-04 11:58:02,202 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-04 11:58:02,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-04 11:58:02,203 INFO L168 Benchmark]: Boogie Preprocessor took 35.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-04 11:58:02,204 INFO L168 Benchmark]: RCFGBuilder took 266.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-04 11:58:02,205 INFO L168 Benchmark]: TraceAbstraction took 25220.01 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -462.0 MB). Peak memory consumption was 820.4 MB. Max. memory is 7.1 GB. [2018-12-04 11:58:02,209 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 266.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25220.01 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -462.0 MB). Peak memory consumption was 820.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: true - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: true - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (main_~i~6 <= 0 && 0 <= main_~i~6) || main_~C~6[0] == main_~B~6[0] + main_~A~6[0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. SAFE Result, 25.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 30 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 22 HoareAnnotationTreeSize, 4 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 7 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...