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-fa1c628-m [2019-01-31 17:37:10,270 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 17:37:10,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 17:37:10,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 17:37:10,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 17:37:10,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 17:37:10,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 17:37:10,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 17:37:10,297 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 17:37:10,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 17:37:10,301 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-31 17:37:10,343 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 [2019-01-31 17:37:10,366 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 17:37:10,366 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 17:37:10,368 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 17:37:10,368 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 17:37:10,368 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 17:37:10,368 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 17:37:10,369 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 17:37:10,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 17:37:10,369 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 17:37:10,369 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-31 17:37:10,369 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-31 17:37:10,369 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 17:37:10,370 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 17:37:10,371 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 17:37:10,371 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 17:37:10,371 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 17:37:10,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 17:37:10,372 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 17:37:10,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 17:37:10,373 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 17:37:10,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 17:37:10,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 17:37:10,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 17:37:10,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 17:37:10,374 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 17:37:10,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 17:37:10,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 17:37:10,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 17:37:10,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 17:37:10,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 17:37:10,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:37:10,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 17:37:10,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 17:37:10,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 17:37:10,376 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 17:37:10,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 17:37:10,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 17:37:10,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 17:37:10,377 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 17:37:10,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 17:37:10,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 17:37:10,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 17:37:10,430 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 17:37:10,431 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 17:37:10,432 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-01-31 17:37:10,432 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-01-31 17:37:10,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 17:37:10,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 17:37:10,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 17:37:10,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 17:37:10,476 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 17:37:10,494 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,506 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 17:37:10,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 17:37:10,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 17:37:10,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 17:37:10,546 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,547 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,549 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,550 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,553 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,557 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,559 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 31.01 05:37:10" (1/1) ... [2019-01-31 17:37:10,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 17:37:10,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 17:37:10,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 17:37:10,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 17:37:10,563 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 31.01 05:37:10" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:37:10,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 17:37:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 17:37:11,130 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 17:37:11,130 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-31 17:37:11,132 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:37:11 BoogieIcfgContainer [2019-01-31 17:37:11,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 17:37:11,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-31 17:37:11,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-31 17:37:11,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-31 17:37:11,137 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 31.01 05:37:10" (1/2) ... [2019-01-31 17:37:11,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aed2ded and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:37:11, skipping insertion in model container [2019-01-31 17:37:11,138 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 31.01 05:37:11" (2/2) ... [2019-01-31 17:37:11,140 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-01-31 17:37:11,150 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-31 17:37:11,159 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-31 17:37:11,196 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-31 17:37:11,258 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-31 17:37:11,259 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-31 17:37:11,259 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-31 17:37:11,259 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-31 17:37:11,259 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-31 17:37:11,260 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-31 17:37:11,260 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-31 17:37:11,260 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-31 17:37:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-31 17:37:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-31 17:37:11,285 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:37:11,286 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-31 17:37:11,289 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:37:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:11,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-31 17:37:11,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:37:11,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:11,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:11,349 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:37:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:11,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-31 17:37:11,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-31 17:37:11,557 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-31 17:37:11,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-31 17:37:11,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-31 17:37:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-31 17:37:11,574 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-31 17:37:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:37:11,880 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-31 17:37:11,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-31 17:37:11,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-31 17:37:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:37:11,898 INFO L225 Difference]: With dead ends: 41 [2019-01-31 17:37:11,899 INFO L226 Difference]: Without dead ends: 36 [2019-01-31 17:37:11,902 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 [2019-01-31 17:37:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-31 17:37:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-31 17:37:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-31 17:37:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-31 17:37:11,955 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-31 17:37:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:37:11,956 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-31 17:37:11,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-31 17:37:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-31 17:37:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:37:11,957 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:37:11,957 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:37:11,958 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:37:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-31 17:37:11,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:37:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:11,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:11,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:11,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:37:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:12,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:12,132 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:37:12,133 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:37:12,135 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-31 17:37:12,190 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-31 17:37:12,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:37:13,294 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:37:13,296 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. [2019-01-31 17:37:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:13,305 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:37:13,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:13,305 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 [2019-01-31 17:37:13,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:13,324 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:37:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:13,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:37:13,609 WARN L181 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-01-31 17:37:13,625 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 [2019-01-31 17:37:13,637 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 [2019-01-31 17:37:13,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,707 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 [2019-01-31 17:37:13,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,752 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,755 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 [2019-01-31 17:37:13,779 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,780 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,787 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,788 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 [2019-01-31 17:37:13,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,901 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,920 INFO L303 Elim1Store]: Index analysis took 127 ms [2019-01-31 17:37:13,921 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 [2019-01-31 17:37:13,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:13,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,077 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,077 INFO L303 Elim1Store]: Index analysis took 152 ms [2019-01-31 17:37:14,079 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 [2019-01-31 17:37:14,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,174 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,199 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,274 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:14,274 INFO L303 Elim1Store]: Index analysis took 190 ms [2019-01-31 17:37:14,279 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 [2019-01-31 17:37:14,320 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 [2019-01-31 17:37:14,322 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:14,724 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,172 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,241 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,289 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,327 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,366 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,396 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,465 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:15,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,598 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 [2019-01-31 17:37:15,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,667 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,670 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 [2019-01-31 17:37:15,742 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,770 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,772 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 [2019-01-31 17:37:15,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,907 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,909 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,910 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,911 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:15,913 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 [2019-01-31 17:37:16,054 WARN L181 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-31 17:37:16,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,077 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,079 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,083 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,086 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 [2019-01-31 17:37:16,196 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-31 17:37:16,200 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,203 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,207 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,208 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,209 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,211 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,214 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 [2019-01-31 17:37:16,413 WARN L181 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-31 17:37:16,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,435 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,439 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,440 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:16,442 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 [2019-01-31 17:37:16,445 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,524 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,583 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,645 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,707 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,778 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,845 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:16,954 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. [2019-01-31 17:37:16,955 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-31 17:37:17,086 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-01-31 17:37:17,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:17,134 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 [2019-01-31 17:37:17,135 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:17,319 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. [2019-01-31 17:37:17,319 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-31 17:37:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:17,365 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:37:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:17,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:37:17,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:37:17,411 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:37:17,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:37:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:37:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:37:17,412 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-31 17:37:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:37:29,592 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-01-31 17:37:29,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-31 17:37:29,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-31 17:37:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:37:29,596 INFO L225 Difference]: With dead ends: 71 [2019-01-31 17:37:29,596 INFO L226 Difference]: Without dead ends: 69 [2019-01-31 17:37:29,597 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 [2019-01-31 17:37:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-31 17:37:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-01-31 17:37:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-31 17:37:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-01-31 17:37:29,605 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-01-31 17:37:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:37:29,605 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-01-31 17:37:29,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-31 17:37:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-01-31 17:37:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:37:29,606 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:37:29,606 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:37:29,606 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:37:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-01-31 17:37:29,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:37:29,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:29,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:29,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:29,608 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:37:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:29,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:29,732 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:37:29,732 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:37:29,732 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-01-31 17:37:29,734 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-31 17:37:29,734 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:37:30,174 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:37:30,174 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. [2019-01-31 17:37:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:30,174 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:37:30,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:30,175 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 [2019-01-31 17:37:30,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:30,192 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:37:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:30,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:37:30,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,277 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 [2019-01-31 17:37:30,330 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,332 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,333 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 [2019-01-31 17:37:30,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,416 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 [2019-01-31 17:37:30,483 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,485 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,488 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,492 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 [2019-01-31 17:37:30,585 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,587 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,588 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,589 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,590 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,592 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,594 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 [2019-01-31 17:37:30,697 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-31 17:37:30,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,721 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,723 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,724 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,727 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,728 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,731 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,733 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 [2019-01-31 17:37:30,863 WARN L181 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-31 17:37:30,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,879 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,882 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,883 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,883 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:30,886 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 [2019-01-31 17:37:30,888 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:30,948 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,009 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,072 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,137 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,199 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,267 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,357 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 [2019-01-31 17:37:31,361 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 [2019-01-31 17:37:31,366 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 [2019-01-31 17:37:31,388 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 [2019-01-31 17:37:31,407 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 [2019-01-31 17:37:31,426 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 [2019-01-31 17:37:31,440 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 [2019-01-31 17:37:31,458 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 [2019-01-31 17:37:31,556 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 [2019-01-31 17:37:31,558 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,638 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,700 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,748 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,786 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,816 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,841 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,860 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,879 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:31,984 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. [2019-01-31 17:37:31,984 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-31 17:37:32,056 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:32,057 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 [2019-01-31 17:37:32,058 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:32,290 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. [2019-01-31 17:37:32,291 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-31 17:37:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:32,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:37:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:32,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:37:32,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:37:32,373 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:37:32,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:37:32,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:37:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:37:32,374 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-01-31 17:37:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:37:43,647 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-01-31 17:37:43,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-31 17:37:43,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-31 17:37:43,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:37:43,650 INFO L225 Difference]: With dead ends: 54 [2019-01-31 17:37:43,650 INFO L226 Difference]: Without dead ends: 52 [2019-01-31 17:37:43,651 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 [2019-01-31 17:37:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-01-31 17:37:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2019-01-31 17:37:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-31 17:37:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-01-31 17:37:43,659 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-01-31 17:37:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:37:43,659 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-01-31 17:37:43,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-31 17:37:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-01-31 17:37:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:37:43,660 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:37:43,660 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:37:43,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:37:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:43,661 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-01-31 17:37:43,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:37:43,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:43,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:43,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:43,662 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:37:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:43,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:43,784 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:37:43,784 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:37:43,784 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-01-31 17:37:43,785 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-31 17:37:43,786 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:37:46,293 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:37:46,293 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. [2019-01-31 17:37:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:46,296 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:37:46,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:46,297 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 [2019-01-31 17:37:46,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:46,311 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:37:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:46,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:37:46,399 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 [2019-01-31 17:37:46,403 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 [2019-01-31 17:37:46,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,415 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 [2019-01-31 17:37:46,419 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,423 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,424 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 [2019-01-31 17:37:46,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,437 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 [2019-01-31 17:37:46,448 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,456 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,458 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 [2019-01-31 17:37:46,465 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,466 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,490 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,492 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 [2019-01-31 17:37:46,499 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,502 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,506 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,507 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,509 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 [2019-01-31 17:37:46,528 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 [2019-01-31 17:37:46,530 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,633 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,700 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,758 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,803 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,841 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,872 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,898 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,921 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:46,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:46,986 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 [2019-01-31 17:37:47,048 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,051 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 [2019-01-31 17:37:47,156 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,163 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,164 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,167 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 [2019-01-31 17:37:47,248 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,253 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,255 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,256 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 [2019-01-31 17:37:47,338 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,339 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,340 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,341 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,342 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,344 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,346 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,348 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 [2019-01-31 17:37:47,449 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,453 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,454 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,457 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,458 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,460 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,462 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 [2019-01-31 17:37:47,590 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-31 17:37:47,594 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,600 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,604 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,606 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:47,607 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 [2019-01-31 17:37:47,609 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:47,665 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:47,723 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:47,782 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:47,873 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:47,936 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:48,000 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:48,106 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. [2019-01-31 17:37:48,107 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-31 17:37:49,949 WARN L181 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 88 [2019-01-31 17:37:49,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:50,045 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 [2019-01-31 17:37:50,046 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-01-31 17:37:50,192 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2019-01-31 17:37:54,323 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. [2019-01-31 17:37:54,324 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1263 [2019-01-31 17:39:18,379 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) stderr output: (error "out of memory") [2019-01-31 17:39:18,580 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-31 17:39:18,582 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:8092 -smt2 -in -t:10000)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 [2019-01-31 17:39:18,586 INFO L168 Benchmark]: Toolchain (without parser) took 128113.13 ms. Allocated memory was 132.1 MB in the beginning and 589.3 MB in the end (delta: 457.2 MB). Free memory was 107.0 MB in the beginning and 453.2 MB in the end (delta: -346.2 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB. [2019-01-31 17:39:18,587 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 17:39:18,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 104.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-31 17:39:18,588 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 ms. Allocated memory is still 132.1 MB. Free memory was 104.5 MB in the beginning and 103.6 MB in the end (delta: 902.2 kB). Peak memory consumption was 902.2 kB. Max. memory is 7.1 GB. [2019-01-31 17:39:18,589 INFO L168 Benchmark]: RCFGBuilder took 570.99 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 89.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-01-31 17:39:18,590 INFO L168 Benchmark]: TraceAbstraction took 127452.71 ms. Allocated memory was 132.1 MB in the beginning and 589.3 MB in the end (delta: 457.2 MB). Free memory was 89.4 MB in the beginning and 453.2 MB in the end (delta: -363.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2019-01-31 17:39:18,594 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 0.21 ms. Allocated memory is still 132.1 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 104.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.05 ms. Allocated memory is still 132.1 MB. Free memory was 104.5 MB in the beginning and 103.6 MB in the end (delta: 902.2 kB). Peak memory consumption was 902.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 570.99 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 89.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 127452.71 ms. Allocated memory was 132.1 MB in the beginning and 589.3 MB in the end (delta: 457.2 MB). Free memory was 89.4 MB in the beginning and 453.2 MB in the end (delta: -363.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000)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:8092 -smt2 -in -t:10000)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...