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/eureka_01.i_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:37:48,443 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:37:48,445 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:37:48,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:37:48,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:37:48,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:37:48,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:37:48,472 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:37:48,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:37:48,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:37:48,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-02-28 10:37:48,478 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-02-28 10:37:48,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-02-28 10:37:48,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-02-28 10:37:48,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-02-28 10:37:48,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-02-28 10:37:48,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-02-28 10:37:48,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-02-28 10:37:48,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-02-28 10:37:48,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-02-28 10:37:48,506 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-02-28 10:37:48,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-02-28 10:37:48,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-02-28 10:37:48,531 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 10:37:48,552 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:37:48,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:37:48,554 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:37:48,554 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:37:48,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:37:48,554 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:37:48,554 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:37:48,555 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:37:48,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:37:48,555 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 10:37:48,555 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 10:37:48,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:37:48,556 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:37:48,557 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:37:48,557 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:37:48,557 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:37:48,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:37:48,557 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:37:48,558 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:37:48,558 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:37:48,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:37:48,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:37:48,559 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:37:48,559 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:37:48,559 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:37:48,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:37:48,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:37:48,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:37:48,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:37:48,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:37:48,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:37:48,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:37:48,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:37:48,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:37:48,561 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:37:48,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:37:48,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:37:48,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:37:48,562 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:37:48,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:37:48,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:37:48,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:37:48,612 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:37:48,612 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:37:48,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/eureka_01.i_6.bpl [2019-02-28 10:37:48,614 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/eureka_01.i_6.bpl' [2019-02-28 10:37:48,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:37:48,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:37:48,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:37:48,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:37:48,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:37:48,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:37:48,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:37:48,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:37:48,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:37:48,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/1) ... [2019-02-28 10:37:48,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:37:48,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:37:48,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:37:48,738 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:37:48,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (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 10:37:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:37:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:37:49,162 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:37:49,163 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-02-28 10:37:49,165 INFO L202 PluginConnector]: Adding new model eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:37:49 BoogieIcfgContainer [2019-02-28 10:37:49,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:37:49,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:37:49,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:37:49,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:37:49,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:37:48" (1/2) ... [2019-02-28 10:37:49,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdcf206 and model type eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:37:49, skipping insertion in model container [2019-02-28 10:37:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "eureka_01.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:37:49" (2/2) ... [2019-02-28 10:37:49,173 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01.i_6.bpl [2019-02-28 10:37:49,185 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:37:49,195 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-28 10:37:49,215 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-28 10:37:49,249 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:37:49,249 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:37:49,250 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:37:49,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:37:49,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:37:49,250 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:37:49,251 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:37:49,251 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:37:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-02-28 10:37:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-02-28 10:37:49,297 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:37:49,298 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-02-28 10:37:49,301 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:37:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:37:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 28790350, now seen corresponding path program 1 times [2019-02-28 10:37:49,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:37:49,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:37:49,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,358 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:37:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:37:49,558 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 10:37:49,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:37:49,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-02-28 10:37:49,561 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:37:49,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-28 10:37:49,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-28 10:37:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-02-28 10:37:49,581 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-02-28 10:37:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:37:49,714 INFO L93 Difference]: Finished difference Result 15 states and 22 transitions. [2019-02-28 10:37:49,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-02-28 10:37:49,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-02-28 10:37:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:37:49,726 INFO L225 Difference]: With dead ends: 15 [2019-02-28 10:37:49,727 INFO L226 Difference]: Without dead ends: 11 [2019-02-28 10:37:49,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-02-28 10:37:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-02-28 10:37:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 8. [2019-02-28 10:37:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-02-28 10:37:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-02-28 10:37:49,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 5 [2019-02-28 10:37:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:37:49,772 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-02-28 10:37:49,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-28 10:37:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 11 transitions. [2019-02-28 10:37:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-02-28 10:37:49,773 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:37:49,773 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-02-28 10:37:49,774 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:37:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:37:49,774 INFO L82 PathProgramCache]: Analyzing trace with hash 892498710, now seen corresponding path program 1 times [2019-02-28 10:37:49,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:37:49,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:37:49,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:37:49,776 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:37:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:37:50,134 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 10:37:50,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:37:50,135 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:37:50,137 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2019-02-28 10:37:50,138 INFO L207 CegarAbsIntRunner]: [0], [5], [12], [20], [22], [30] [2019-02-28 10:37:50,196 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 10:37:50,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:43:04,587 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-02-28 10:43:04,589 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Never found a fixpoint. Largest state had 0 variables. [2019-02-28 10:43:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:43:04,594 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-02-28 10:43:07,128 INFO L418 sIntCurrentIteration]: Unifying AI predicates