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/heapseparator/speedup-poc-dd-9-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-20 10:40:26,421 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-20 10:40:26,423 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-20 10:40:26,439 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-20 10:40:26,439 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-20 10:40:26,440 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-20 10:40:26,442 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-20 10:40:26,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-20 10:40:26,446 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-20 10:40:26,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-20 10:40:26,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-20 10:40:26,497 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 [2019-01-20 10:40:26,519 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-20 10:40:26,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-20 10:40:26,522 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-20 10:40:26,522 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-20 10:40:26,522 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-20 10:40:26,523 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-20 10:40:26,523 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-20 10:40:26,523 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-20 10:40:26,524 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-20 10:40:26,524 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-20 10:40:26,524 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-20 10:40:26,524 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-20 10:40:26,524 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-20 10:40:26,525 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-20 10:40:26,525 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-20 10:40:26,526 INFO L133 SettingsManager]: * Use SBE=true [2019-01-20 10:40:26,527 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-20 10:40:26,527 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-20 10:40:26,527 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-20 10:40:26,528 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-20 10:40:26,528 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-20 10:40:26,528 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-20 10:40:26,528 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-20 10:40:26,528 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-20 10:40:26,529 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-20 10:40:26,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-20 10:40:26,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-20 10:40:26,530 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-20 10:40:26,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-20 10:40:26,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-20 10:40:26,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-20 10:40:26,531 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-20 10:40:26,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-20 10:40:26,532 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-20 10:40:26,532 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-20 10:40:26,532 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-20 10:40:26,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-20 10:40:26,532 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-20 10:40:26,533 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-20 10:40:26,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-20 10:40:26,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-20 10:40:26,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-20 10:40:26,607 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-20 10:40:26,607 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-20 10:40:26,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-01-20 10:40:26,608 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-01-20 10:40:26,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-20 10:40:26,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-20 10:40:26,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-20 10:40:26,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-20 10:40:26,658 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-20 10:40:26,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-20 10:40:26,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-20 10:40:26,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-20 10:40:26,716 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-20 10:40:26,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/1) ... [2019-01-20 10:40:26,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-20 10:40:26,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-20 10:40:26,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-20 10:40:26,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-20 10:40:26,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (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 [2019-01-20 10:40:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-20 10:40:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-20 10:40:27,296 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-20 10:40:27,296 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-20 10:40:27,297 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:40:27 BoogieIcfgContainer [2019-01-20 10:40:27,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-20 10:40:27,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-20 10:40:27,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-20 10:40:27,301 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-20 10:40:27,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.01 10:40:26" (1/2) ... [2019-01-20 10:40:27,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2c85b6 and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:40:27, skipping insertion in model container [2019-01-20 10:40:27,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:40:27" (2/2) ... [2019-01-20 10:40:27,305 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-01-20 10:40:27,314 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-20 10:40:27,322 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-20 10:40:27,334 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-20 10:40:27,361 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-20 10:40:27,361 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-20 10:40:27,361 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-20 10:40:27,361 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-20 10:40:27,362 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-20 10:40:27,362 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-20 10:40:27,362 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-20 10:40:27,362 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-20 10:40:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-20 10:40:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-20 10:40:27,382 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:40:27,383 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-20 10:40:27,385 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:40:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:27,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-20 10:40:27,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:40:27,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:27,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:27,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:27,438 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:40:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:27,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-20 10:40:27,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-20 10:40:27,608 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-20 10:40:27,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-20 10:40:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-20 10:40:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-20 10:40:27,628 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-20 10:40:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-20 10:40:27,903 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-20 10:40:27,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-20 10:40:27,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-20 10:40:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-20 10:40:27,919 INFO L225 Difference]: With dead ends: 41 [2019-01-20 10:40:27,919 INFO L226 Difference]: Without dead ends: 36 [2019-01-20 10:40:27,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-20 10:40:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-20 10:40:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-20 10:40:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-20 10:40:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-20 10:40:27,974 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-20 10:40:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-20 10:40:27,975 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-20 10:40:27,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-20 10:40:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-20 10:40:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-20 10:40:27,976 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:40:27,976 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-20 10:40:27,977 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:40:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-20 10:40:27,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:40:27,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:27,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:27,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:27,979 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:40:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:28,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:40:28,147 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-20 10:40:28,148 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-20 10:40:28,149 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-20 10:40:28,208 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-20 10:40:28,208 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-20 10:40:29,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-20 10:40:29,341 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-20 10:40:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:29,353 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-20 10:40:29,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:40:29,354 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 [2019-01-20 10:40:29,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:29,375 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-20 10:40:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:29,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-20 10:40:29,699 WARN L181 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-01-20 10:40:29,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 30 treesize of output 33 [2019-01-20 10:40:29,735 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 33 treesize of output 39 [2019-01-20 10:40:29,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,796 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2019-01-20 10:40:29,830 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,836 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,861 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2019-01-20 10:40:29,911 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,934 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,991 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:29,992 INFO L303 Elim1Store]: Index analysis took 125 ms [2019-01-20 10:40:29,993 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2019-01-20 10:40:30,042 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,073 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,095 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,144 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,145 INFO L303 Elim1Store]: Index analysis took 145 ms [2019-01-20 10:40:30,146 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2019-01-20 10:40:30,193 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,257 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,304 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,304 INFO L303 Elim1Store]: Index analysis took 151 ms [2019-01-20 10:40:30,306 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2019-01-20 10:40:30,338 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:30,484 INFO L303 Elim1Store]: Index analysis took 173 ms [2019-01-20 10:40:30,486 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2019-01-20 10:40:30,666 INFO L303 Elim1Store]: Index analysis took 174 ms [2019-01-20 10:40:30,670 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2019-01-20 10:40:30,676 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,134 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,584 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,684 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,732 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,805 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,874 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,901 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:31,933 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:32,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,105 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2019-01-20 10:40:32,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,187 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,188 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2019-01-20 10:40:32,254 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,256 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,259 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,262 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2019-01-20 10:40:32,365 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,368 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,370 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,373 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,375 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2019-01-20 10:40:32,518 WARN L181 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-20 10:40:32,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,534 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,536 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,539 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-20 10:40:32,652 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-20 10:40:32,657 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,659 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,664 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,665 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,665 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,667 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,669 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,672 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-20 10:40:32,893 WARN L181 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-20 10:40:32,910 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,913 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,916 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,916 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,918 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:32,928 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-20 10:40:32,930 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:32,993 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,052 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,114 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,182 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,253 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,561 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:33,665 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-20 10:40:33,665 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-20 10:40:33,810 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-01-20 10:40:33,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:33,846 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 153 [2019-01-20 10:40:33,847 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:34,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-20 10:40:34,063 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-20 10:40:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:34,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-20 10:40:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:34,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-20 10:40:34,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-20 10:40:34,170 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-20 10:40:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-20 10:40:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-20 10:40:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-20 10:40:34,171 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-20 10:40:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-20 10:40:45,979 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-01-20 10:40:45,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-20 10:40:45,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-20 10:40:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-20 10:40:45,984 INFO L225 Difference]: With dead ends: 71 [2019-01-20 10:40:45,984 INFO L226 Difference]: Without dead ends: 69 [2019-01-20 10:40:45,985 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-20 10:40:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-20 10:40:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-01-20 10:40:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-20 10:40:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-01-20 10:40:45,992 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-01-20 10:40:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-20 10:40:45,993 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-01-20 10:40:45,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-20 10:40:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-01-20 10:40:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-20 10:40:45,993 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:40:45,993 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-20 10:40:45,994 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:40:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-01-20 10:40:45,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:40:45,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:45,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:45,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:45,995 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:40:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:46,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:40:46,094 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-20 10:40:46,095 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-20 10:40:46,095 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-01-20 10:40:46,097 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-20 10:40:46,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-20 10:40:46,506 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-20 10:40:46,507 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-20 10:40:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:46,507 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-20 10:40:46,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:40:46,507 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-20 10:40:46,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:46,525 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-20 10:40:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:46,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-20 10:40:46,582 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,583 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2019-01-20 10:40:46,682 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2019-01-20 10:40:46,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,772 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,775 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2019-01-20 10:40:46,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,862 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2019-01-20 10:40:46,944 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,945 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,947 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,953 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:46,955 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-20 10:40:47,060 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,062 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,063 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,064 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,072 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-20 10:40:47,234 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-20 10:40:47,242 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,243 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,253 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,255 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:47,256 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-20 10:40:47,258 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,317 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,378 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,442 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,509 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,600 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,665 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,743 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-01-20 10:40:47,760 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2019-01-20 10:40:47,764 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2019-01-20 10:40:47,786 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2019-01-20 10:40:47,799 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 25 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2019-01-20 10:40:47,819 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 27 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2019-01-20 10:40:47,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2019-01-20 10:40:47,851 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2019-01-20 10:40:47,888 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2019-01-20 10:40:47,889 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:47,970 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,032 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,080 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,117 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,147 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,172 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,194 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,213 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,331 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-20 10:40:48,332 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-20 10:40:48,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:40:48,401 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 159 [2019-01-20 10:40:48,402 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-20 10:40:48,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-20 10:40:48,631 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-20 10:40:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:48,672 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-20 10:40:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:48,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-20 10:40:48,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-20 10:40:48,723 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-20 10:40:48,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-20 10:40:48,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-20 10:40:48,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-20 10:40:48,724 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-01-20 10:40:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-20 10:40:59,692 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-01-20 10:40:59,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-20 10:40:59,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-20 10:40:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-20 10:40:59,694 INFO L225 Difference]: With dead ends: 54 [2019-01-20 10:40:59,694 INFO L226 Difference]: Without dead ends: 52 [2019-01-20 10:40:59,694 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-20 10:40:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-01-20 10:40:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2019-01-20 10:40:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-20 10:40:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-01-20 10:40:59,701 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-01-20 10:40:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-20 10:40:59,702 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-01-20 10:40:59,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-20 10:40:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-01-20 10:40:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-20 10:40:59,702 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:40:59,703 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-20 10:40:59,703 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:40:59,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:40:59,703 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-01-20 10:40:59,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:40:59,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:59,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:40:59,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:40:59,705 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:40:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:40:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:40:59,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:40:59,831 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-20 10:40:59,831 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-20 10:40:59,831 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-01-20 10:40:59,833 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-20 10:40:59,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-20 10:41:02,368 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-20 10:41:02,369 INFO L272 AbstractInterpreter]: Visited 3 different actions 11 times. Merged at 1 different actions 4 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-20 10:41:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:41:02,370 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-20 10:41:02,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:41:02,370 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-20 10:41:02,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:41:02,385 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-20 10:41:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:41:02,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-20 10:41:02,531 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-01-20 10:41:02,536 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 30 treesize of output 33 [2019-01-20 10:41:02,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 33 treesize of output 39 [2019-01-20 10:41:02,556 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,558 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,559 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2019-01-20 10:41:02,584 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,590 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2019-01-20 10:41:02,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,599 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,600 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,601 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2019-01-20 10:41:02,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,611 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,613 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,615 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,616 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2019-01-20 10:41:02,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,623 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,624 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,627 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,629 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,631 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2019-01-20 10:41:02,637 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,641 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,642 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,661 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:02,662 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2019-01-20 10:41:02,681 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2019-01-20 10:41:02,683 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-20 10:41:02,793 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:02,860 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:02,913 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:02,951 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:02,982 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,008 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,032 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,052 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,110 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,111 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2019-01-20 10:41:03,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,167 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2019-01-20 10:41:03,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2019-01-20 10:41:03,323 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,324 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,326 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,327 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,329 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,330 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2019-01-20 10:41:03,423 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,424 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,434 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-20 10:41:03,547 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-20 10:41:03,552 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,553 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,554 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,554 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,555 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,556 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,557 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,558 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,560 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,561 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-20 10:41:03,696 WARN L181 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-20 10:41:03,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,702 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,709 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,711 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,713 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,715 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:03,716 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-20 10:41:03,718 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,781 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,840 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,901 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:03,963 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:04,025 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:04,087 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:41:04,192 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-20 10:41:04,193 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-20 10:41:05,957 WARN L181 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 88 [2019-01-20 10:41:06,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:41:06,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 16 case distinctions, treesize of input 56 treesize of output 190 [2019-01-20 10:41:06,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-01-20 10:41:06,255 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2019-01-20 10:41:10,316 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 64 dim-0 vars, and 9 xjuncts. [2019-01-20 10:41:10,317 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1319 [2019-01-20 10:41:20,791 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-20 10:41:20,992 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-20 10:41:20,994 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:152) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2019-01-20 10:41:20,998 INFO L168 Benchmark]: Toolchain (without parser) took 54342.08 ms. Allocated memory was 141.0 MB in the beginning and 468.2 MB in the end (delta: 327.2 MB). Free memory was 108.1 MB in the beginning and 422.8 MB in the end (delta: -314.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-01-20 10:41:20,999 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory is still 109.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-20 10:41:20,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.75 ms. Allocated memory is still 141.0 MB. Free memory was 108.1 MB in the beginning and 105.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-20 10:41:21,000 INFO L168 Benchmark]: Boogie Preprocessor took 26.91 ms. Allocated memory is still 141.0 MB. Free memory was 105.6 MB in the beginning and 104.7 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. [2019-01-20 10:41:21,001 INFO L168 Benchmark]: RCFGBuilder took 554.95 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 90.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-01-20 10:41:21,001 INFO L168 Benchmark]: TraceAbstraction took 53699.27 ms. Allocated memory was 141.0 MB in the beginning and 468.2 MB in the end (delta: 327.2 MB). Free memory was 90.4 MB in the beginning and 422.8 MB in the end (delta: -332.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-20 10:41:21,005 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 0.18 ms. Allocated memory is still 141.0 MB. Free memory is still 109.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.75 ms. Allocated memory is still 141.0 MB. Free memory was 108.1 MB in the beginning and 105.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.91 ms. Allocated memory is still 141.0 MB. Free memory was 105.6 MB in the beginning and 104.7 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 554.95 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 90.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53699.27 ms. Allocated memory was 141.0 MB in the beginning and 468.2 MB in the end (delta: 327.2 MB). Free memory was 90.4 MB in the beginning and 422.8 MB in the end (delta: -332.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...