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/array3.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-4b9831f [2018-12-23 14:26:45,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-23 14:26:45,870 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-23 14:26:45,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-23 14:26:45,918 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-23 14:26:45,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-23 14:26:45,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-23 14:26:45,934 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-23 14:26:45,934 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-23 14:26:45,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-23 14:26:45,934 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-23 14:26:45,934 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-23 14:26:45,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-23 14:26:45,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-23 14:26:45,935 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-23 14:26:45,935 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-23 14:26:45,936 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-23 14:26:45,936 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-23 14:26:45,937 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-23 14:26:45,937 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-23 14:26:45,937 INFO L133 SettingsManager]: * Use SBE=true [2018-12-23 14:26:45,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-23 14:26:45,938 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-23 14:26:45,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-23 14:26:45,938 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-23 14:26:45,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-23 14:26:45,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-23 14:26:45,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-23 14:26:45,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-23 14:26:45,939 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-23 14:26:45,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-23 14:26:45,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-23 14:26:45,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-23 14:26:45,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-23 14:26:45,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-23 14:26:45,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-23 14:26:45,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-23 14:26:45,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-23 14:26:45,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-23 14:26:45,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-23 14:26:45,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-23 14:26:45,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-23 14:26:45,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-23 14:26:45,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-23 14:26:45,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-23 14:26:45,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-23 14:26:46,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-23 14:26:46,005 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-23 14:26:46,006 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-23 14:26:46,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl [2018-12-23 14:26:46,007 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl' [2018-12-23 14:26:46,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-23 14:26:46,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-23 14:26:46,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-23 14:26:46,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-23 14:26:46,083 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-23 14:26:46,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-23 14:26:46,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-23 14:26:46,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-23 14:26:46,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-23 14:26:46,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/1) ... [2018-12-23 14:26:46,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-23 14:26:46,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-23 14:26:46,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-23 14:26:46,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-23 14:26:46,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (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 [2018-12-23 14:26:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-23 14:26:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-23 14:26:46,599 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-23 14:26:46,600 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-23 14:26:46,600 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:26:46 BoogieIcfgContainer [2018-12-23 14:26:46,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-23 14:26:46,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-23 14:26:46,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-23 14:26:46,605 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-23 14:26:46,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:26:46" (1/2) ... [2018-12-23 14:26:46,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5dd0a8 and model type array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:26:46, skipping insertion in model container [2018-12-23 14:26:46,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:26:46" (2/2) ... [2018-12-23 14:26:46,609 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i_4.bpl [2018-12-23 14:26:46,620 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-23 14:26:46,628 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-23 14:26:46,647 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-23 14:26:46,683 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-23 14:26:46,683 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-23 14:26:46,683 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-23 14:26:46,684 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-23 14:26:46,684 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-23 14:26:46,684 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-23 14:26:46,684 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-23 14:26:46,685 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-23 14:26:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-23 14:26:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-23 14:26:46,707 INFO L394 BasicCegarLoop]: Found error trace [2018-12-23 14:26:46,708 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-23 14:26:46,710 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-23 14:26:46,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-23 14:26:46,721 INFO L82 PathProgramCache]: Analyzing trace with hash 928714, now seen corresponding path program 1 times [2018-12-23 14:26:46,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-23 14:26:46,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:26:46,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-23 14:26:46,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:26:46,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-23 14:26:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-23 14:26:47,002 INFO L273 TraceCheckUtils]: 0: Hoare triple {10#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~post2, main_~A~5, main_~i~5;havoc main_~A~5;havoc main_~i~5;main_~i~5 := 0; {12#(<= ULTIMATE.start_main_~i~5 0)} is VALID [2018-12-23 14:26:47,007 INFO L273 TraceCheckUtils]: 1: Hoare triple {12#(<= ULTIMATE.start_main_~i~5 0)} assume !(main_~i~5 < 1024);main_~i~5 := 0; {11#false} is VALID [2018-12-23 14:26:47,007 INFO L273 TraceCheckUtils]: 2: Hoare triple {11#false} assume !(main_~A~5[main_~i~5] != 0 && main_~i~5 < 1024);__VERIFIER_assert_#in~cond := (if main_~i~5 <= 512 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 [2018-12-23 14:26:47,008 INFO L273 TraceCheckUtils]: 3: Hoare triple {11#false} assume !false; {11#false} is VALID [2018-12-23 14:26:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-23 14:26:47,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-23 14:26:47,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-23 14:26:47,012 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-23 14:26:47,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-23 14:26:47,018 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-23 14:26:47,021 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2018-12-23 14:26:47,043 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-23 14:26:47,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-23 14:26:47,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-23 14:26:47,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-23 14:26:47,055 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-23 14:26:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:26:47,190 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2018-12-23 14:26:47,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-23 14:26:47,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-23 14:26:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-23 14:26:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-23 14:26:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-12-23 14:26:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-23 14:26:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-12-23 14:26:47,201 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 16 transitions. [2018-12-23 14:26:47,272 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-23 14:26:47,283 INFO L225 Difference]: With dead ends: 12 [2018-12-23 14:26:47,283 INFO L226 Difference]: Without dead ends: 7 [2018-12-23 14:26:47,286 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 [2018-12-23 14:26:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-23 14:26:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-23 14:26:47,400 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-12-23 14:26:47,401 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2018-12-23 14:26:47,401 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2018-12-23 14:26:47,402 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2018-12-23 14:26:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:26:47,404 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-23 14:26:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-23 14:26:47,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-23 14:26:47,405 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-23 14:26:47,405 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2018-12-23 14:26:47,405 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2018-12-23 14:26:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:26:47,407 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-23 14:26:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-23 14:26:47,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-23 14:26:47,408 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-23 14:26:47,408 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-12-23 14:26:47,408 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-12-23 14:26:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-23 14:26:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-12-23 14:26:47,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2018-12-23 14:26:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-23 14:26:47,413 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-23 14:26:47,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-23 14:26:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-23 14:26:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-23 14:26:47,414 INFO L394 BasicCegarLoop]: Found error trace [2018-12-23 14:26:47,414 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-23 14:26:47,414 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-23 14:26:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-23 14:26:47,415 INFO L82 PathProgramCache]: Analyzing trace with hash 894131125, now seen corresponding path program 1 times [2018-12-23 14:26:47,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-23 14:26:47,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:26:47,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-23 14:26:47,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:26:47,417 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-23 14:26:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-23 14:26:47,684 INFO L273 TraceCheckUtils]: 0: Hoare triple {60#true} havoc main_#res;havoc main_#t~nondet1, main_#t~post0, main_#t~post2, main_~A~5, main_~i~5;havoc main_~A~5;havoc main_~i~5;main_~i~5 := 0; {62#(<= ULTIMATE.start_main_~i~5 0)} is VALID [2018-12-23 14:26:47,694 INFO L273 TraceCheckUtils]: 1: Hoare triple {62#(<= ULTIMATE.start_main_~i~5 0)} assume !!(main_~i~5 < 1024);assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~A~5 := main_~A~5[main_~i~5 := main_#t~nondet1];havoc main_#t~nondet1;main_#t~post0 := main_~i~5;main_~i~5 := main_#t~post0 + 1;havoc main_#t~post0; {63#(<= ULTIMATE.start_main_~i~5 1)} is VALID [2018-12-23 14:26:47,707 INFO L273 TraceCheckUtils]: 2: Hoare triple {63#(<= ULTIMATE.start_main_~i~5 1)} assume !(main_~i~5 < 1024);main_~i~5 := 0; {61#false} is VALID [2018-12-23 14:26:47,708 INFO L273 TraceCheckUtils]: 3: Hoare triple {61#false} assume !!(main_~A~5[main_~i~5] != 0 && main_~i~5 < 1024);main_#t~post2 := main_~i~5;main_~i~5 := main_#t~post2 + 1;havoc main_#t~post2; {61#false} is VALID [2018-12-23 14:26:47,709 INFO L273 TraceCheckUtils]: 4: Hoare triple {61#false} assume !(main_~A~5[main_~i~5] != 0 && main_~i~5 < 1024);__VERIFIER_assert_#in~cond := (if main_~i~5 <= 512 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond;assume __VERIFIER_assert_~cond == 0;assume !false; {61#false} is VALID [2018-12-23 14:26:47,709 INFO L273 TraceCheckUtils]: 5: Hoare triple {61#false} assume !false; {61#false} is VALID [2018-12-23 14:26:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-23 14:26:47,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-23 14:26:47,710 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-23 14:26:47,711 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-23 14:26:47,714 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [16] [2018-12-23 14:26:47,779 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-23 14:26:47,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-23 14:26:54,264 WARN L212 ngHoareTripleChecker]: Soundness check inconclusive for the following hoare triple [2018-12-23 14:26:54,265 WARN L217 ngHoareTripleChecker]: Expected: VALID Actual: UNKNOWN [2018-12-23 14:26:54,265 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2018-12-23 14:26:54,266 WARN L223 ngHoareTripleChecker]: -- [2018-12-23 14:26:54,267 WARN L224 ngHoareTripleChecker]: Pre: {2147483635#(or (forall ((v_idx_30 Int) (v_idx_29 Int) (v_idx_28 Int)) (exists ((v_v_3_1 Int) (v_v_4_1 Int) (v_v_5_1 Int) (v_b_0_1 Int) (v_b_1_1 Int)) (and (<= (- (- v_b_0_1) (- v_v_4_1)) 2147483647) (<= (- c_ULTIMATE.start_main_~i~5 v_b_0_1) 1) (<= (- v_b_0_1 (- v_b_1_1)) 1) (<= (- c_ULTIMATE.start_main_~i~5 (- c_ULTIMATE.start_main_~i~5)) 2) (<= (- (- v_b_0_1) v_b_1_1) (- 1)) (<= (- v_b_0_1 v_v_4_1) 2147483648) (<= (- c_ULTIMATE.start_main_~i~5 (- v_v_4_1)) 2147483648) (or (<= v_b_1_1 v_idx_29) (= v_v_4_1 (select c_ULTIMATE.start_main_~A~5 v_idx_29)) (< v_idx_29 v_b_0_1)) (<= (- (- c_ULTIMATE.start_main_~i~5) v_v_4_1) 2147483647) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_v_4_1)) 2147483646) (<= (- c_ULTIMATE.start_main_~i~5 v_b_1_1) 0) (<= (- v_b_1_1 (- v_b_1_1)) 2) (<= (- (- v_b_1_1) (- v_v_4_1)) 2147483646) (<= (- c_ULTIMATE.start_main_~i~5 v_v_4_1) 2147483649) (<= (- (- v_b_0_1) v_v_4_1) 2147483648) (<= (- (- v_b_0_1) (- v_b_1_1)) 1) (<= (- (- v_v_4_1) v_v_4_1) 4294967296) (<= (- (- v_b_1_1) v_b_1_1) (- 2)) (<= (- v_b_0_1 v_b_1_1) (- 1)) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_0_1) (- 1)) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_0_1)) 1) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_1_1)) 2) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_1_1) (- 2)) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_0_1)) (- 1)) (<= (- v_b_0_1 (- v_b_0_1)) 0) (<= (- (- v_b_0_1) v_b_0_1) 0) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_1_1)) 0) (<= (- v_b_1_1 (- v_v_4_1)) 2147483648) (<= (- v_v_4_1 (- v_v_4_1)) 4294967294) (or (= (select c_ULTIMATE.start_main_~A~5 v_idx_30) v_v_5_1) (< v_idx_30 v_b_1_1)) (<= (- (- c_ULTIMATE.start_main_~i~5) c_ULTIMATE.start_main_~i~5) (- 2)) (<= (- v_b_0_1 (- v_v_4_1)) 2147483647) (<= (- v_b_1_1 v_v_4_1) 2147483649) (<= (- (- v_b_1_1) v_v_4_1) 2147483647) (or (<= v_b_0_1 v_idx_28) (= (select c_ULTIMATE.start_main_~A~5 v_idx_28) v_v_3_1))))) (forall ((v_idx_32 Int) (v_idx_33 Int) (v_idx_31 Int)) (exists ((v_v_120_1 Int) (v_b_8_1 Int) (v_b_9_1 Int) (v_v_119_1 Int) (v_v_121_1 Int)) (and (<= (- (- v_b_8_1) (- v_v_120_1)) 2147483647) (<= (- (- c_ULTIMATE.start_main_~i~5) v_v_120_1) 2147483648) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_9_1) 0) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_v_120_1)) 2147483647) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_8_1)) 0) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_9_1)) 4) (<= (- v_b_8_1 v_b_9_1) 0) (<= (- (- v_b_9_1) v_b_9_1) 0) (<= (- (- v_b_8_1) v_b_9_1) 0) (<= (- v_b_9_1 v_v_120_1) 2147483650) (<= (- (- v_b_9_1) v_v_120_1) 2147483648) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_8_1) 0) (<= (- v_b_8_1 (- v_b_8_1)) 0) (<= (- v_b_8_1 (- v_b_9_1)) 2) (<= (- c_ULTIMATE.start_main_~i~5 v_b_8_1) 2) (<= (- v_b_9_1 (- v_b_9_1)) 4) (<= (- (- v_b_9_1) (- v_v_120_1)) 2147483647) (<= (- v_b_9_1 (- v_v_120_1)) 2147483649) (<= (- (- v_b_8_1) v_b_8_1) 0) (<= (- c_ULTIMATE.start_main_~i~5 (- v_v_120_1)) 2147483649) (<= (- c_ULTIMATE.start_main_~i~5 (- c_ULTIMATE.start_main_~i~5)) 4) (<= (- (- v_b_8_1) v_v_120_1) 2147483648) (<= (- (- v_v_120_1) v_v_120_1) 4294967296) (<= (- v_b_8_1 (- v_v_120_1)) 2147483647) (<= (- (- c_ULTIMATE.start_main_~i~5) c_ULTIMATE.start_main_~i~5) 0) (<= (- (- v_b_8_1) (- v_b_9_1)) 2) (or (= v_v_119_1 (select c_ULTIMATE.start_main_~A~5 v_idx_31)) (<= v_b_8_1 v_idx_31)) (<= (- c_ULTIMATE.start_main_~i~5 v_b_9_1) 0) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_8_1)) 2) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_9_1)) 0) (or (< v_idx_32 v_b_8_1) (<= v_b_9_1 v_idx_32) (= v_v_120_1 (select c_ULTIMATE.start_main_~A~5 v_idx_32))) (<= (- v_b_8_1 v_v_120_1) 2147483648) (<= (- c_ULTIMATE.start_main_~i~5 v_v_120_1) 2147483650) (<= (- v_v_120_1 (- v_v_120_1)) 4294967294) (or (< v_idx_33 v_b_9_1) (= (select c_ULTIMATE.start_main_~A~5 v_idx_33) v_v_121_1))))))} [2018-12-23 14:26:54,267 WARN L228 ngHoareTripleChecker]: Action: assume !!(main_~i~5 < 1024);assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~A~5 := main_~A~5[main_~i~5 := main_#t~nondet1];havoc main_#t~nondet1;main_#t~post0 := main_~i~5;main_~i~5 := main_#t~post0 + 1;havoc main_#t~post0; [2018-12-23 14:26:54,268 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (= (+ c_ULTIMATE.start_main_~i~5 1) c_ULTIMATE.start_main_~i~5_primed) (< c_ULTIMATE.start_main_~i~5 1024) (<= |c_ULTIMATE.start_main_#t~nondet1| 2147483647) (<= 0 (+ |c_ULTIMATE.start_main_#t~nondet1| 2147483648)) (= c_ULTIMATE.start_main_~A~5_primed (store c_ULTIMATE.start_main_~A~5 c_ULTIMATE.start_main_~i~5 |c_ULTIMATE.start_main_#t~nondet1|))) [2018-12-23 14:26:54,269 WARN L230 ngHoareTripleChecker]: Post: {2147483634#(forall ((v_idx_36 Int) (v_idx_34 Int) (v_idx_35 Int)) (exists ((v_v_120_1 Int) (v_b_13_1 Int) (v_b_8_1 Int) (v_v_129_1 Int) (v_v_119_1 Int)) (and (<= (- (- v_b_8_1) (- v_v_120_1)) 2147483647) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_v_120_1)) 2147483646) (<= (- v_b_13_1 v_b_8_1) 3) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_13_1)) 0) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_13_1)) 6) (or (< v_idx_36 v_b_13_1) (= (select c_ULTIMATE.start_main_~A~5 v_idx_36) v_v_129_1)) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_13_1) (- 2)) (<= (- (- v_b_13_1) v_v_120_1) 2147483647) (<= (- c_ULTIMATE.start_main_~i~5 (- v_v_120_1)) 2147483650) (<= (- v_b_8_1 (- v_b_8_1)) 0) (or (< v_idx_35 v_b_8_1) (<= v_b_13_1 v_idx_35) (= (select c_ULTIMATE.start_main_~A~5 v_idx_35) v_v_120_1)) (<= (- c_ULTIMATE.start_main_~i~5 v_b_13_1) 0) (<= (- v_b_13_1 (- v_b_13_1)) 6) (<= (- (- v_b_8_1) v_b_8_1) 0) (<= (- (- v_b_8_1) v_v_120_1) 2147483648) (<= (- (- v_v_120_1) v_v_120_1) 4294967296) (<= (- (- v_b_13_1) (- v_v_120_1)) 2147483646) (<= (- v_b_13_1 (- v_b_8_1)) 3) (or (<= v_b_8_1 v_idx_34) (= v_v_119_1 (select c_ULTIMATE.start_main_~A~5 v_idx_34))) (<= (- (- c_ULTIMATE.start_main_~i~5) v_b_8_1) (- 1)) (<= (- (- v_b_13_1) (- v_b_8_1)) (- 1)) (<= (- v_b_8_1 (- v_v_120_1)) 2147483647) (<= (- c_ULTIMATE.start_main_~i~5 v_b_8_1) 3) (<= (- c_ULTIMATE.start_main_~i~5 v_v_120_1) 2147483651) (<= (- (- c_ULTIMATE.start_main_~i~5) v_v_120_1) 2147483647) (<= (- c_ULTIMATE.start_main_~i~5 (- c_ULTIMATE.start_main_~i~5)) 6) (<= (- (- v_b_13_1) v_b_13_1) (- 2)) (<= (- v_b_13_1 (- v_v_120_1)) 2147483650) (<= (- v_b_13_1 v_v_120_1) 2147483651) (<= (- (- c_ULTIMATE.start_main_~i~5) (- v_b_8_1)) (- 1)) (<= (- v_b_8_1 v_v_120_1) 2147483648) (<= (- (- c_ULTIMATE.start_main_~i~5) c_ULTIMATE.start_main_~i~5) (- 2)) (<= (- c_ULTIMATE.start_main_~i~5 (- v_b_8_1)) 3) (<= (- (- v_b_13_1) v_b_8_1) (- 1)) (<= (- v_v_120_1 (- v_v_120_1)) 4294967294))))} [2018-12-23 14:26:54,269 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2018-12-23 14:26:54,303 WARN L268 ngHoareTripleChecker]: -- [2018-12-23 14:26:54,303 WARN L269 ngHoareTripleChecker]: Simplified triple [2018-12-23 14:27:01,130 WARN L181 SmtUtils]: Spent 6.82 s on a formula simplification. DAG size of input: 197 DAG size of output: 103 [2018-12-23 14:27:01,130 WARN L270 ngHoareTripleChecker]: Pre: {2147483635#(forall ((v_idx_32 Int) (v_idx_33 Int) (v_idx_31 Int)) (exists ((v_v_120_1 Int) (v_b_8_1 Int) (v_b_9_1 Int) (v_v_119_1 Int) (v_v_121_1 Int)) (and (<= (- (- v_b_8_1) (- v_v_120_1)) 2147483647) (<= (- (- ULTIMATE.start_main_~i~5) v_v_120_1) 2147483648) (<= (- (- ULTIMATE.start_main_~i~5) v_b_9_1) 0) (<= (- (- ULTIMATE.start_main_~i~5) (- v_v_120_1)) 2147483647) (<= (- (- ULTIMATE.start_main_~i~5) (- v_b_8_1)) 0) (<= (- ULTIMATE.start_main_~i~5 (- v_b_9_1)) 4) (<= (- v_b_8_1 v_b_9_1) 0) (<= (- (- v_b_9_1) v_b_9_1) 0) (<= (- (- v_b_8_1) v_b_9_1) 0) (<= (- v_b_9_1 v_v_120_1) 2147483650) (<= (- (- v_b_9_1) v_v_120_1) 2147483648) (<= (- (- ULTIMATE.start_main_~i~5) v_b_8_1) 0) (<= (- v_b_8_1 (- v_b_8_1)) 0) (<= (- v_b_8_1 (- v_b_9_1)) 2) (<= (- ULTIMATE.start_main_~i~5 v_b_8_1) 2) (<= (- v_b_9_1 (- v_b_9_1)) 4) (<= (- (- v_b_9_1) (- v_v_120_1)) 2147483647) (<= (- v_b_9_1 (- v_v_120_1)) 2147483649) (<= (- (- v_b_8_1) v_b_8_1) 0) (<= (- ULTIMATE.start_main_~i~5 (- v_v_120_1)) 2147483649) (<= (- ULTIMATE.start_main_~i~5 (- ULTIMATE.start_main_~i~5)) 4) (<= (- (- v_b_8_1) v_v_120_1) 2147483648) (<= (- (- v_v_120_1) v_v_120_1) 4294967296) (<= (- v_b_8_1 (- v_v_120_1)) 2147483647) (<= (- (- ULTIMATE.start_main_~i~5) ULTIMATE.start_main_~i~5) 0) (<= (- (- v_b_8_1) (- v_b_9_1)) 2) (or (= v_v_119_1 (select ULTIMATE.start_main_~A~5 v_idx_31)) (<= v_b_8_1 v_idx_31)) (<= (- ULTIMATE.start_main_~i~5 v_b_9_1) 0) (<= (- ULTIMATE.start_main_~i~5 (- v_b_8_1)) 2) (<= (- (- ULTIMATE.start_main_~i~5) (- v_b_9_1)) 0) (or (< v_idx_32 v_b_8_1) (<= v_b_9_1 v_idx_32) (= v_v_120_1 (select ULTIMATE.start_main_~A~5 v_idx_32))) (<= (- v_b_8_1 v_v_120_1) 2147483648) (<= (- ULTIMATE.start_main_~i~5 v_v_120_1) 2147483650) (<= (- v_v_120_1 (- v_v_120_1)) 4294967294) (or (< v_idx_33 v_b_9_1) (= (select ULTIMATE.start_main_~A~5 v_idx_33) v_v_121_1)))))} [2018-12-23 14:27:01,131 WARN L274 ngHoareTripleChecker]: Action: assume !!(main_~i~5 < 1024);assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~A~5 := main_~A~5[main_~i~5 := main_#t~nondet1];havoc main_#t~nondet1;main_#t~post0 := main_~i~5;main_~i~5 := main_#t~post0 + 1;havoc main_#t~post0; [2018-12-23 14:27:01,132 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (= (+ c_ULTIMATE.start_main_~i~5 1) c_ULTIMATE.start_main_~i~5_primed) (< c_ULTIMATE.start_main_~i~5 1024) (<= |c_ULTIMATE.start_main_#t~nondet1| 2147483647) (<= 0 (+ |c_ULTIMATE.start_main_#t~nondet1| 2147483648)) (= c_ULTIMATE.start_main_~A~5_primed (store c_ULTIMATE.start_main_~A~5 c_ULTIMATE.start_main_~i~5 |c_ULTIMATE.start_main_#t~nondet1|)))