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_compound_oct_cong.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:17:41,028 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:17:41,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:17:41,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:17:41,052 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:17:41,053 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:17:41,055 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:17:41,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:17:41,062 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:17:41,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:17:41,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 18:17:41,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 18:17:41,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 18:17:41,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 18:17:41,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 18:17:41,069 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 18:17:41,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 18:17:41,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 18:17:41,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 18:17:41,075 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 18:17:41,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 18:17:41,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 18:17:41,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 18:17:41,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 18:17:41,081 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 18:17:41,082 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 18:17:41,083 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 18:17:41,083 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 18:17:41,084 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 18:17:41,085 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 18:17:41,086 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 18:17:41,086 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 18:17:41,087 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 18:17:41,087 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 18:17:41,088 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 18:17:41,089 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 18:17:41,089 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 18:17:41,112 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:17:41,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:17:41,114 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:17:41,115 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:17:41,115 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:17:41,115 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:17:41,115 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:17:41,116 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:17:41,116 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:17:41,116 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:17:41,116 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:17:41,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:17:41,117 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:17:41,118 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:17:41,118 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:17:41,118 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:17:41,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:17:41,121 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:17:41,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:17:41,121 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:17:41,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:17:41,121 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:17:41,122 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:17:41,122 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:17:41,122 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:17:41,122 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:17:41,122 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:17:41,123 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:17:41,123 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:17:41,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:17:41,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:17:41,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:17:41,127 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:17:41,127 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:17:41,127 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:17:41,127 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:17:41,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:17:41,128 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:17:41,128 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:17:41,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:17:41,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:17:41,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:17:41,213 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:17:41,213 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:17:41,214 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl [2018-12-03 18:17:41,215 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement.bpl' [2018-12-03 18:17:41,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:17:41,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:17:41,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:17:41,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:17:41,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:17:41,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:17:41,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:17:41,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:17:41,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:17:41,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/1) ... [2018-12-03 18:17:41,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:17:41,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:17:41,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:17:41,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:17:41,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (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 [2018-12-03 18:17:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 18:17:41,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 18:17:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 18:17:41,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 18:17:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 18:17:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 18:17:41,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 18:17:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure ~malloc [2018-12-03 18:17:41,828 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 18:17:41,828 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:17:41,829 INFO L202 PluginConnector]: Adding new model PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:41 BoogieIcfgContainer [2018-12-03 18:17:41,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:17:41,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:17:41,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:17:41,838 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:17:41,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:41" (1/2) ... [2018-12-03 18:17:41,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78525469 and model type PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:17:41, skipping insertion in model container [2018-12-03 18:17:41,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:41" (2/2) ... [2018-12-03 18:17:41,842 INFO L112 eAbstractionObserver]: Analyzing ICFG PointerIncrement.bpl [2018-12-03 18:17:41,858 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:17:41,866 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-03 18:17:41,880 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-03 18:17:41,915 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:17:41,915 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:17:41,915 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:17:41,916 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:17:41,916 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:17:41,916 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:17:41,916 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:17:41,916 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:17:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-03 18:17:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 18:17:41,939 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:41,939 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 18:17:41,941 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:41,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1075821819, now seen corresponding path program 1 times [2018-12-03 18:17:41,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:42,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:42,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:42,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:42,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 18:17:42,144 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:42,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:42,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:42,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:42,166 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-03 18:17:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:42,249 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-12-03 18:17:42,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:42,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 18:17:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:42,262 INFO L225 Difference]: With dead ends: 23 [2018-12-03 18:17:42,263 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 18:17:42,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 18:17:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-03 18:17:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-03 18:17:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-12-03 18:17:42,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-12-03 18:17:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:42,306 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-03 18:17:42,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-12-03 18:17:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 18:17:42,307 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:42,307 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 18:17:42,308 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:42,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1075821818, now seen corresponding path program 1 times [2018-12-03 18:17:42,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:42,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:42,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,310 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:42,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:42,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 18:17:42,417 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:42,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:42,421 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2018-12-03 18:17:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:42,486 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-12-03 18:17:42,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:42,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 18:17:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:42,487 INFO L225 Difference]: With dead ends: 18 [2018-12-03 18:17:42,488 INFO L226 Difference]: Without dead ends: 17 [2018-12-03 18:17:42,489 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 [2018-12-03 18:17:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-03 18:17:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-12-03 18:17:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 18:17:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-12-03 18:17:42,494 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2018-12-03 18:17:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:42,494 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-12-03 18:17:42,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-12-03 18:17:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 18:17:42,495 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:42,495 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 18:17:42,496 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:42,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:42,496 INFO L82 PathProgramCache]: Analyzing trace with hash -755999005, now seen corresponding path program 1 times [2018-12-03 18:17:42,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:42,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,499 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:42,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:42,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 18:17:42,576 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:42,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:42,577 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-12-03 18:17:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:42,619 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-12-03 18:17:42,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:42,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-03 18:17:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:42,622 INFO L225 Difference]: With dead ends: 22 [2018-12-03 18:17:42,622 INFO L226 Difference]: Without dead ends: 15 [2018-12-03 18:17:42,623 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-03 18:17:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-03 18:17:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 18:17:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-03 18:17:42,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-12-03 18:17:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:42,632 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-03 18:17:42,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-03 18:17:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 18:17:42,633 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:42,633 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 18:17:42,634 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:42,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2003729472, now seen corresponding path program 1 times [2018-12-03 18:17:42,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:42,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:42,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:42,639 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:42,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:17:42,828 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 18:17:42,829 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-03 18:17:42,831 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [13], [15], [16], [24], [30], [31], [32] [2018-12-03 18:17:42,883 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:17:42,883 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:17:42,920 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) 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:316) 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) Caused by: java.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.handleCallTransition(ArrayDomainPostOperator.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$18(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.crossProductCollection(DisjunctiveAbstractState.java:513) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:243) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-03 18:17:42,925 INFO L168 Benchmark]: Toolchain (without parser) took 1659.14 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-12-03 18:17:42,927 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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. [2018-12-03 18:17:42,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.42 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. [2018-12-03 18:17:42,928 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 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. [2018-12-03 18:17:42,929 INFO L168 Benchmark]: RCFGBuilder took 477.91 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. [2018-12-03 18:17:42,930 INFO L168 Benchmark]: TraceAbstraction took 1091.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 18:17:42,934 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 0.24 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 46.42 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 35.96 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 477.91 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 1091.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...