java -ea -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/vogal.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 13:37:46,790 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 13:37:46,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 13:37:46,804 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 13:37:46,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 13:37:46,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 13:37:46,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 13:37:46,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 13:37:46,811 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 13:37:46,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 13:37:46,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-02-28 13:37:46,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-02-28 13:37:46,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-02-28 13:37:46,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-02-28 13:37:46,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-02-28 13:37:46,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-02-28 13:37:46,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-02-28 13:37:46,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-02-28 13:37:46,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-02-28 13:37:46,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-02-28 13:37:46,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-02-28 13:37:46,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-02-28 13:37:46,839 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-02-28 13:37:46,855 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 [2019-02-28 13:37:46,879 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 13:37:46,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 13:37:46,881 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 13:37:46,881 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 13:37:46,882 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 13:37:46,882 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 13:37:46,882 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 13:37:46,882 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 13:37:46,883 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 13:37:46,883 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 13:37:46,883 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 13:37:46,883 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 13:37:46,884 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 13:37:46,884 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 13:37:46,884 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 13:37:46,885 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 13:37:46,885 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 13:37:46,885 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 13:37:46,885 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 13:37:46,885 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 13:37:46,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 13:37:46,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 13:37:46,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 13:37:46,888 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 13:37:46,888 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 13:37:46,888 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 13:37:46,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 13:37:46,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 13:37:46,889 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 13:37:46,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 13:37:46,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:37:46,890 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 13:37:46,890 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 13:37:46,890 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 13:37:46,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 13:37:46,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 13:37:46,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 13:37:46,891 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 13:37:46,891 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 13:37:46,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 13:37:46,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 13:37:46,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 13:37:46,965 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 13:37:46,965 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 13:37:46,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/vogal.i_5.bpl [2019-02-28 13:37:46,966 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/vogal.i_5.bpl' [2019-02-28 13:37:47,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 13:37:47,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 13:37:47,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 13:37:47,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 13:37:47,024 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 13:37:47,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 13:37:47,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 13:37:47,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 13:37:47,062 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 13:37:47,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/1) ... [2019-02-28 13:37:47,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 13:37:47,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 13:37:47,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 13:37:47,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 13:37:47,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:37:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 13:37:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 13:37:47,610 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2019-02-28 13:37:47,611 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 13:37:47,611 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-02-28 13:37:47,612 INFO L202 PluginConnector]: Adding new model vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:37:47 BoogieIcfgContainer [2019-02-28 13:37:47,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 13:37:47,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 13:37:47,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 13:37:47,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 13:37:47,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:37:47" (1/2) ... [2019-02-28 13:37:47,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55759a52 and model type vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 01:37:47, skipping insertion in model container [2019-02-28 13:37:47,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vogal.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:37:47" (2/2) ... [2019-02-28 13:37:47,620 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal.i_5.bpl [2019-02-28 13:37:47,629 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 13:37:47,638 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-28 13:37:47,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-28 13:37:47,693 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 13:37:47,694 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 13:37:47,694 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 13:37:47,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 13:37:47,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 13:37:47,694 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 13:37:47,694 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 13:37:47,695 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 13:37:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-02-28 13:37:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-02-28 13:37:47,715 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:37:47,716 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-02-28 13:37:47,719 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:37:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:37:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash 28790250, now seen corresponding path program 1 times [2019-02-28 13:37:47,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:37:47,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:37:47,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:37:47,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:37:47,774 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:37:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:37:48,041 INFO L273 TraceCheckUtils]: 0: Hoare triple {10#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~post2, main_#t~post5, main_#t~post4, main_#t~post3, main_#t~post7, main_#t~post6, main_#t~post8, main_~string_entrada~5, main_~vetor_vogais~5, main_~i~5, main_~j~5, main_~cont~5, main_~tam_string~5, main_~n_caracter~5, main_~cont_aux~5;havoc main_~string_entrada~5;main_~vetor_vogais~5 := main_~vetor_vogais~5[0 := 97];main_~vetor_vogais~5 := main_~vetor_vogais~5[1 := 65];main_~vetor_vogais~5 := main_~vetor_vogais~5[2 := 101];main_~vetor_vogais~5 := main_~vetor_vogais~5[3 := 69];main_~vetor_vogais~5 := main_~vetor_vogais~5[4 := 105];main_~vetor_vogais~5 := main_~vetor_vogais~5[5 := 73];main_~vetor_vogais~5 := main_~vetor_vogais~5[6 := 111];main_~vetor_vogais~5 := main_~vetor_vogais~5[7 := 79];main_~vetor_vogais~5 := main_~vetor_vogais~5[8 := 117];main_~vetor_vogais~5 := main_~vetor_vogais~5[9 := 85];main_~vetor_vogais~5 := main_~vetor_vogais~5[10 := 0];havoc main_~i~5;havoc main_~j~5;havoc main_~cont~5;havoc main_~tam_string~5;havoc main_~n_caracter~5;main_~i~5 := 0; {12#(and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0))} is VALID [2019-02-28 13:37:48,044 INFO L273 TraceCheckUtils]: 1: Hoare triple {12#(and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0))} assume !(main_~i~5 % 4294967296 < 10);main_~string_entrada~5 := main_~string_entrada~5[9 := 0];main_~n_caracter~5 := 0; {11#false} is VALID [2019-02-28 13:37:48,044 INFO L273 TraceCheckUtils]: 2: Hoare triple {11#false} assume !(main_~string_entrada~5[main_~n_caracter~5 % 4294967296] != 0);main_~cont~5 := 0;main_~i~5 := 0;assume !(main_~i~5 % 4294967296 < main_~n_caracter~5 % 4294967296);main_~i~5 := 0;main_~cont_aux~5 := 0; {11#false} is VALID [2019-02-28 13:37:48,045 INFO L273 TraceCheckUtils]: 3: Hoare triple {11#false} assume !(main_~string_entrada~5[main_~i~5 % 4294967296] != 0);__VERIFIER_assert_#in~cond := (if main_~cont_aux~5 % 4294967296 == main_~cont~5 % 4294967296 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond;assume __VERIFIER_assert_~cond == 0;assume !false; {11#false} is VALID [2019-02-28 13:37:48,045 INFO L273 TraceCheckUtils]: 4: Hoare triple {11#false} assume !false; {11#false} is VALID [2019-02-28 13:37:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:37:48,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 13:37:48,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-02-28 13:37:48,051 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 13:37:48,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-02-28 13:37:48,057 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-28 13:37:48,061 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2019-02-28 13:37:48,099 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:37:48,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 13:37:48,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 13:37:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:37:48,109 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-02-28 13:37:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:37:48,397 INFO L93 Difference]: Finished difference Result 17 states and 27 transitions. [2019-02-28 13:37:48,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 13:37:48,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-02-28 13:37:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 13:37:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:37:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-02-28 13:37:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:37:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-02-28 13:37:48,414 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 27 transitions. [2019-02-28 13:37:48,588 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:37:48,598 INFO L225 Difference]: With dead ends: 17 [2019-02-28 13:37:48,599 INFO L226 Difference]: Without dead ends: 12 [2019-02-28 13:37:48,602 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:37:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-02-28 13:37:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2019-02-28 13:37:48,697 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-28 13:37:48,698 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 8 states. [2019-02-28 13:37:48,698 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 8 states. [2019-02-28 13:37:48,698 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 8 states. [2019-02-28 13:37:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:37:48,701 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2019-02-28 13:37:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-02-28 13:37:48,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:37:48,702 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:37:48,702 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 12 states. [2019-02-28 13:37:48,702 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 12 states. [2019-02-28 13:37:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:37:48,704 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2019-02-28 13:37:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-02-28 13:37:48,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:37:48,705 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:37:48,705 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-28 13:37:48,705 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-28 13:37:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-02-28 13:37:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-02-28 13:37:48,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 5 [2019-02-28 13:37:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 13:37:48,709 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-02-28 13:37:48,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 13:37:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 11 transitions. [2019-02-28 13:37:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-02-28 13:37:48,709 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:37:48,710 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-02-28 13:37:48,710 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:37:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:37:48,710 INFO L82 PathProgramCache]: Analyzing trace with hash 894129427, now seen corresponding path program 1 times [2019-02-28 13:37:48,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:37:48,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:37:48,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:37:48,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:37:48,712 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:37:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:37:48,965 INFO L273 TraceCheckUtils]: 0: Hoare triple {83#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~post2, main_#t~post5, main_#t~post4, main_#t~post3, main_#t~post7, main_#t~post6, main_#t~post8, main_~string_entrada~5, main_~vetor_vogais~5, main_~i~5, main_~j~5, main_~cont~5, main_~tam_string~5, main_~n_caracter~5, main_~cont_aux~5;havoc main_~string_entrada~5;main_~vetor_vogais~5 := main_~vetor_vogais~5[0 := 97];main_~vetor_vogais~5 := main_~vetor_vogais~5[1 := 65];main_~vetor_vogais~5 := main_~vetor_vogais~5[2 := 101];main_~vetor_vogais~5 := main_~vetor_vogais~5[3 := 69];main_~vetor_vogais~5 := main_~vetor_vogais~5[4 := 105];main_~vetor_vogais~5 := main_~vetor_vogais~5[5 := 73];main_~vetor_vogais~5 := main_~vetor_vogais~5[6 := 111];main_~vetor_vogais~5 := main_~vetor_vogais~5[7 := 79];main_~vetor_vogais~5 := main_~vetor_vogais~5[8 := 117];main_~vetor_vogais~5 := main_~vetor_vogais~5[9 := 85];main_~vetor_vogais~5 := main_~vetor_vogais~5[10 := 0];havoc main_~i~5;havoc main_~j~5;havoc main_~cont~5;havoc main_~tam_string~5;havoc main_~n_caracter~5;main_~i~5 := 0; {85#(and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0))} is VALID [2019-02-28 13:37:48,970 INFO L273 TraceCheckUtils]: 1: Hoare triple {85#(and (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0))} assume !!(main_~i~5 % 4294967296 < 10);assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~string_entrada~5 := main_~string_entrada~5[main_~i~5 % 4294967296 := main_#t~nondet1];havoc main_#t~nondet1;main_#t~post0 := main_~i~5;main_~i~5 := main_#t~post0 + 1;havoc main_#t~post0; {86#(and (< 0 (+ (div ULTIMATE.start_main_~i~5 4294967296) 1)) (<= ULTIMATE.start_main_~i~5 1))} is VALID [2019-02-28 13:37:48,979 INFO L273 TraceCheckUtils]: 2: Hoare triple {86#(and (< 0 (+ (div ULTIMATE.start_main_~i~5 4294967296) 1)) (<= ULTIMATE.start_main_~i~5 1))} assume !(main_~i~5 % 4294967296 < 10);main_~string_entrada~5 := main_~string_entrada~5[9 := 0];main_~n_caracter~5 := 0; {84#false} is VALID [2019-02-28 13:37:48,980 INFO L273 TraceCheckUtils]: 3: Hoare triple {84#false} assume !(main_~string_entrada~5[main_~n_caracter~5 % 4294967296] != 0);main_~cont~5 := 0;main_~i~5 := 0;assume !(main_~i~5 % 4294967296 < main_~n_caracter~5 % 4294967296);main_~i~5 := 0;main_~cont_aux~5 := 0; {84#false} is VALID [2019-02-28 13:37:48,980 INFO L273 TraceCheckUtils]: 4: Hoare triple {84#false} assume !(main_~string_entrada~5[main_~i~5 % 4294967296] != 0);__VERIFIER_assert_#in~cond := (if main_~cont_aux~5 % 4294967296 == main_~cont~5 % 4294967296 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond;assume __VERIFIER_assert_~cond == 0;assume !false; {84#false} is VALID [2019-02-28 13:37:48,981 INFO L273 TraceCheckUtils]: 5: Hoare triple {84#false} assume !false; {84#false} is VALID [2019-02-28 13:37:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:37:48,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 13:37:48,982 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 13:37:48,983 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2019-02-28 13:37:48,985 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [12], [19], [23] [2019-02-28 13:37:49,041 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 13:37:49,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 13:37:53,599 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.