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 0.1.24-0ed9222-m [2019-01-11 14:37:24,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 14:37:24,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 14:37:24,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 14:37:24,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 14:37:24,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 14:37:24,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 14:37:24,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 14:37:24,973 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 14:37:24,974 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 14:37:24,975 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-11 14:37:24,976 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-11 14:37:24,977 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-11 14:37:24,978 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-11 14:37:24,979 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-11 14:37:24,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-11 14:37:24,981 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-11 14:37:24,983 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-11 14:37:24,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-11 14:37:24,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-11 14:37:24,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-11 14:37:24,989 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-11 14:37:24,991 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-11 14:37:24,991 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-11 14:37:24,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-11 14:37:24,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-11 14:37:24,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-11 14:37:24,994 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-11 14:37:24,995 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-11 14:37:24,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-11 14:37:24,997 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-11 14:37:24,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-11 14:37:24,997 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-11 14:37:24,998 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-11 14:37:24,999 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-11 14:37:24,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-11 14:37:25,000 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 [2019-01-11 14:37:25,013 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 14:37:25,014 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 14:37:25,015 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 14:37:25,015 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 14:37:25,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 14:37:25,015 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 14:37:25,015 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 14:37:25,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 14:37:25,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 14:37:25,016 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-11 14:37:25,016 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-11 14:37:25,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 14:37:25,017 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 14:37:25,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 14:37:25,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 14:37:25,018 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 14:37:25,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 14:37:25,018 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 14:37:25,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 14:37:25,019 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 14:37:25,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 14:37:25,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 14:37:25,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 14:37:25,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 14:37:25,021 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 14:37:25,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 14:37:25,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 14:37:25,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 14:37:25,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 14:37:25,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 14:37:25,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 14:37:25,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 14:37:25,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 14:37:25,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 14:37:25,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 14:37:25,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 14:37:25,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 14:37:25,085 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 14:37:25,085 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 14:37:25,086 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum_array.i_3.bpl [2019-01-11 14:37:25,086 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/sum_array.i_3.bpl' [2019-01-11 14:37:25,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 14:37:25,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 14:37:25,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 14:37:25,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 14:37:25,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 14:37:25,150 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,164 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 14:37:25,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 14:37:25,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 14:37:25,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 14:37:25,187 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,188 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,189 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,190 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,195 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,199 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,200 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 11.01 02:37:25" (1/1) ... [2019-01-11 14:37:25,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 14:37:25,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 14:37:25,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 14:37:25,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 14:37:25,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:37:25" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-11 14:37:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 14:37:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 14:37:25,534 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 14:37:25,534 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-11 14:37:25,536 INFO L202 PluginConnector]: Adding new model sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:37:25 BoogieIcfgContainer [2019-01-11 14:37:25,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 14:37:25,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 14:37:25,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 14:37:25,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 14:37:25,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:37:25" (1/2) ... [2019-01-11 14:37:25,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab6b64f and model type sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:37:25, skipping insertion in model container [2019-01-11 14:37:25,543 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 11.01 02:37:25" (2/2) ... [2019-01-11 14:37:25,545 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array.i_3.bpl [2019-01-11 14:37:25,556 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 14:37:25,564 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-11 14:37:25,582 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-11 14:37:25,617 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 14:37:25,617 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 14:37:25,618 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 14:37:25,618 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 14:37:25,618 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 14:37:25,618 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 14:37:25,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 14:37:25,619 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 14:37:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-11 14:37:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-11 14:37:25,642 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:37:25,643 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-11 14:37:25,646 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:37:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:37:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash 28790250, now seen corresponding path program 1 times [2019-01-11 14:37:25,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:37:25,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:37:25,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:37:25,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:37:25,715 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:37:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:37:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:37:25,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 14:37:25,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-11 14:37:25,997 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 14:37:26,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-11 14:37:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-11 14:37:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-11 14:37:26,016 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2019-01-11 14:37:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:37:26,230 INFO L93 Difference]: Finished difference Result 17 states and 26 transitions. [2019-01-11 14:37:26,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 14:37:26,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-11 14:37:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:37:26,244 INFO L225 Difference]: With dead ends: 17 [2019-01-11 14:37:26,244 INFO L226 Difference]: Without dead ends: 9 [2019-01-11 14:37:26,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-11 14:37:26,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-11 14:37:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-11 14:37:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-11 14:37:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-01-11 14:37:26,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-01-11 14:37:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:37:26,291 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-11 14:37:26,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-11 14:37:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-01-11 14:37:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-11 14:37:26,292 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:37:26,292 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-11 14:37:26,292 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:37:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:37:26,293 INFO L82 PathProgramCache]: Analyzing trace with hash 266557342, now seen corresponding path program 1 times [2019-01-11 14:37:26,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:37:26,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:37:26,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:37:26,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:37:26,295 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:37:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:37:26,777 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 5 [2019-01-11 14:37:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-11 14:37:26,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:37:26,898 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:37:26,900 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 9 with the following transitions: [2019-01-11 14:37:26,902 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [21], [23] [2019-01-11 14:37:26,966 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-11 14:37:26,966 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:37:27,052 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-01-11 14:37:34,600 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:37:34,602 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. [2019-01-11 14:37:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:37:34,611 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:37:34,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:37:34,611 INFO L193 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 [2019-01-11 14:37:34,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:37:34,627 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:37:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:37:34,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:37:34,736 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 [2019-01-11 14:37:34,737 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:37:34,801 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:37:34,803 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2019-01-11 14:37:34,821 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 [2019-01-11 14:37:34,822 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:37:34,854 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:37:34,855 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2019-01-11 14:37:34,875 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 [2019-01-11 14:37:34,876 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:37:34,890 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. [2019-01-11 14:37:34,891 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:24 [2019-01-11 14:37:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:37:34,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:37:35,167 WARN L181 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2019-01-11 14:37:35,183 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 [2019-01-11 14:37:35,184 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:37:35,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:37:35,212 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:5 [2019-01-11 14:37:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-11 14:37:35,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 14:37:35,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2019-01-11 14:37:35,281 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 14:37:35,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-11 14:37:35,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-11 14:37:35,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-11 14:37:35,283 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 5 states. [2019-01-11 14:37:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:37:35,352 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-01-11 14:37:35,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 14:37:35,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-01-11 14:37:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:37:35,353 INFO L225 Difference]: With dead ends: 9 [2019-01-11 14:37:35,353 INFO L226 Difference]: Without dead ends: 0 [2019-01-11 14:37:35,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-11 14:37:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-11 14:37:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-11 14:37:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-11 14:37:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-11 14:37:35,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-01-11 14:37:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:37:35,357 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-11 14:37:35,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-11 14:37:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-11 14:37:35,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-11 14:37:35,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-11 14:37:35,424 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 91) no Hoare annotation was computed. [2019-01-11 14:37:35,424 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 92) no Hoare annotation was computed. [2019-01-11 14:37:35,425 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 92) no Hoare annotation was computed. [2019-01-11 14:37:35,425 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 92) no Hoare annotation was computed. [2019-01-11 14:37:35,425 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)))) [2019-01-11 14:37:35,425 INFO L444 ceAbstractionStarter]: At program point L82(lines 82 90) the Hoare annotation is: false [2019-01-11 14:37:35,426 INFO L451 ceAbstractionStarter]: At program point L47(lines 28 47) the Hoare annotation is: true [2019-01-11 14:37:35,426 INFO L451 ceAbstractionStarter]: At program point L66(lines 37 66) the Hoare annotation is: true [2019-01-11 14:37:35,437 INFO L202 PluginConnector]: Adding new model sum_array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:37:35 BoogieIcfgContainer [2019-01-11 14:37:35,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-11 14:37:35,438 INFO L168 Benchmark]: Toolchain (without parser) took 10311.37 ms. Allocated memory was 132.1 MB in the beginning and 468.2 MB in the end (delta: 336.1 MB). Free memory was 105.9 MB in the beginning and 298.2 MB in the end (delta: -192.2 MB). Peak memory consumption was 143.8 MB. Max. memory is 7.1 GB. [2019-01-11 14:37:35,440 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 132.1 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 14:37:35,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 104.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-01-11 14:37:35,441 INFO L168 Benchmark]: Boogie Preprocessor took 33.82 ms. Allocated memory is still 132.1 MB. Free memory was 104.2 MB in the beginning and 103.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-01-11 14:37:35,442 INFO L168 Benchmark]: RCFGBuilder took 326.66 ms. Allocated memory is still 132.1 MB. Free memory was 103.0 MB in the beginning and 92.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-01-11 14:37:35,443 INFO L168 Benchmark]: TraceAbstraction took 9900.18 ms. Allocated memory was 132.1 MB in the beginning and 468.2 MB in the end (delta: 336.1 MB). Free memory was 92.5 MB in the beginning and 298.2 MB in the end (delta: -205.7 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. [2019-01-11 14:37:35,448 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 132.1 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 104.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.82 ms. Allocated memory is still 132.1 MB. Free memory was 104.2 MB in the beginning and 103.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.66 ms. Allocated memory is still 132.1 MB. Free memory was 103.0 MB in the beginning and 92.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9900.18 ms. Allocated memory was 132.1 MB in the beginning and 468.2 MB in the end (delta: 336.1 MB). Free memory was 92.5 MB in the beginning and 298.2 MB in the end (delta: -205.7 MB). Peak memory consumption was 130.4 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, 9.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s 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, 0.5s 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, 7.7s 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, 0.2s SatisfiabilityAnalysisTime, 1.2s 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...