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 0.1.24-1de736e-m [2019-02-15 11:26:18,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-15 11:26:18,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-15 11:26:18,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-15 11:26:18,851 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-15 11:26:18,852 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-15 11:26:18,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-15 11:26:18,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-15 11:26:18,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-15 11:26:18,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-15 11:26:18,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-15 11:26:18,887 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-02-15 11:26:18,900 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-15 11:26:18,901 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-15 11:26:18,902 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-15 11:26:18,902 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-15 11:26:18,902 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-15 11:26:18,902 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-15 11:26:18,902 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-15 11:26:18,903 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-15 11:26:18,903 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-15 11:26:18,903 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-15 11:26:18,903 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-15 11:26:18,903 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-15 11:26:18,904 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-15 11:26:18,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-15 11:26:18,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-15 11:26:18,905 INFO L133 SettingsManager]: * Use SBE=true [2019-02-15 11:26:18,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-15 11:26:18,905 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-15 11:26:18,905 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-15 11:26:18,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-15 11:26:18,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-15 11:26:18,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-15 11:26:18,906 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-15 11:26:18,906 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-15 11:26:18,906 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-15 11:26:18,907 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-15 11:26:18,907 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-15 11:26:18,907 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-15 11:26:18,907 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-15 11:26:18,907 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-15 11:26:18,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-02-15 11:26:18,908 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-15 11:26:18,908 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-15 11:26:18,908 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-15 11:26:18,908 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-15 11:26:18,909 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-15 11:26:18,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-02-15 11:26:18,909 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-15 11:26:18,909 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-15 11:26:18,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-15 11:26:18,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-15 11:26:18,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-15 11:26:18,959 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-15 11:26:18,960 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-15 11:26:18,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-02-15 11:26:18,961 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-02-15 11:26:18,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-15 11:26:18,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-15 11:26:18,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-15 11:26:18,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-15 11:26:18,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-15 11:26:19,015 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,031 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-15 11:26:19,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-15 11:26:19,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-15 11:26:19,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-15 11:26:19,073 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,073 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,076 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,076 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,081 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,086 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,088 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 15.02 11:26:18" (1/1) ... [2019-02-15 11:26:19,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-15 11:26:19,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-15 11:26:19,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-15 11:26:19,091 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-15 11:26:19,092 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 15.02 11:26:18" (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 [2019-02-15 11:26:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-15 11:26:19,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-15 11:26:19,615 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-15 11:26:19,615 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-02-15 11:26:19,617 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:26:19 BoogieIcfgContainer [2019-02-15 11:26:19,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-15 11:26:19,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-15 11:26:19,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-15 11:26:19,630 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-15 11:26:19,630 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 15.02 11:26:18" (1/2) ... [2019-02-15 11:26:19,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3fb3b1 and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:26:19, skipping insertion in model container [2019-02-15 11:26:19,632 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 15.02 11:26:19" (2/2) ... [2019-02-15 11:26:19,634 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-02-15 11:26:19,644 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-15 11:26:19,653 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-02-15 11:26:19,671 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-02-15 11:26:19,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-15 11:26:19,707 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-15 11:26:19,707 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-15 11:26:19,707 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-15 11:26:19,707 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-15 11:26:19,708 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-15 11:26:19,708 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-15 11:26:19,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-15 11:26:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-02-15 11:26:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-15 11:26:19,744 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 11:26:19,745 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-15 11:26:19,749 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-15 11:26:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-02-15 11:26:19,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 11:26:19,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:19,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:19,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:19,819 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 11:26:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:20,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-15 11:26:20,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-15 11:26:20,089 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-15 11:26:20,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-15 11:26:20,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-15 11:26:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-15 11:26:20,108 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-02-15 11:26:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-15 11:26:20,316 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-02-15 11:26:20,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-15 11:26:20,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-15 11:26:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-15 11:26:20,333 INFO L225 Difference]: With dead ends: 41 [2019-02-15 11:26:20,333 INFO L226 Difference]: Without dead ends: 36 [2019-02-15 11:26:20,336 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 [2019-02-15 11:26:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-02-15 11:26:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-02-15 11:26:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-02-15 11:26:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-02-15 11:26:20,391 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-02-15 11:26:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-15 11:26:20,392 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-02-15 11:26:20,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-15 11:26:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-02-15 11:26:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-15 11:26:20,393 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 11:26:20,393 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-15 11:26:20,394 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-15 11:26:20,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:20,395 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-02-15 11:26:20,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 11:26:20,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:20,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:20,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:20,396 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 11:26:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:20,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:20,589 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-15 11:26:20,590 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-15 11:26:20,595 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-02-15 11:26:20,675 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-15 11:26:20,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-15 11:26:21,748 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-15 11:26:21,807 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. [2019-02-15 11:26:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:21,817 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-15 11:26:21,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:21,818 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 [2019-02-15 11:26:21,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:21,833 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-15 11:26:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:21,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-15 11:26:22,109 WARN L181 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-02-15 11:26:22,129 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 [2019-02-15 11:26:22,148 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 [2019-02-15 11:26:22,187 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,193 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,196 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 [2019-02-15 11:26:22,241 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,258 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,260 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,261 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 [2019-02-15 11:26:22,308 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,332 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,355 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,383 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,384 INFO L303 Elim1Store]: Index analysis took 117 ms [2019-02-15 11:26:22,386 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 [2019-02-15 11:26:22,433 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,463 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,493 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,516 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,537 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,538 INFO L303 Elim1Store]: Index analysis took 145 ms [2019-02-15 11:26:22,540 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 [2019-02-15 11:26:22,589 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,611 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,633 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,661 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,668 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,670 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,673 INFO L303 Elim1Store]: Index analysis took 126 ms [2019-02-15 11:26:22,678 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 [2019-02-15 11:26:22,722 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,747 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,767 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,769 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,771 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,773 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,778 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:22,780 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 [2019-02-15 11:26:22,900 INFO L303 Elim1Store]: Index analysis took 114 ms [2019-02-15 11:26:22,902 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 [2019-02-15 11:26:22,905 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,312 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,768 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,831 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,877 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,928 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:23,981 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:24,012 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:24,055 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:24,232 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,233 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 [2019-02-15 11:26:24,330 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,333 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,334 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 [2019-02-15 11:26:24,403 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,405 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,407 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,408 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,410 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 [2019-02-15 11:26:24,522 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,524 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,526 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,528 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,530 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,531 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,533 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 [2019-02-15 11:26:24,659 WARN L181 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-02-15 11:26:24,704 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,723 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,724 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,725 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,726 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,727 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,728 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,730 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,732 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 [2019-02-15 11:26:24,866 WARN L181 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-02-15 11:26:24,874 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,876 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,878 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,880 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,881 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,882 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,884 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,886 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,888 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,890 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:24,892 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 [2019-02-15 11:26:25,155 WARN L181 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-02-15 11:26:25,164 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,165 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,166 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,167 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,168 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,169 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,170 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,171 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,173 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,174 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,175 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,176 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,179 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 [2019-02-15 11:26:25,180 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,259 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,316 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,376 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,441 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,524 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,649 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:25,753 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. [2019-02-15 11:26:25,753 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-02-15 11:26:25,908 WARN L181 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-02-15 11:26:25,924 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:25,926 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 [2019-02-15 11:26:25,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:26,112 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. [2019-02-15 11:26:26,113 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-02-15 11:26:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:26,148 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-15 11:26:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:26,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-15 11:26:26,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-15 11:26:26,192 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-15 11:26:26,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-15 11:26:26,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-15 11:26:26,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-15 11:26:26,194 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-02-15 11:26:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-15 11:26:38,312 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-02-15 11:26:38,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-15 11:26:38,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-15 11:26:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-15 11:26:38,317 INFO L225 Difference]: With dead ends: 71 [2019-02-15 11:26:38,317 INFO L226 Difference]: Without dead ends: 69 [2019-02-15 11:26:38,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-15 11:26:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-02-15 11:26:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-02-15 11:26:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-02-15 11:26:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-02-15 11:26:38,325 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-02-15 11:26:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-15 11:26:38,326 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-02-15 11:26:38,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-15 11:26:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-02-15 11:26:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-15 11:26:38,326 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 11:26:38,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-15 11:26:38,327 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-15 11:26:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-02-15 11:26:38,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 11:26:38,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:38,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:38,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:38,329 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 11:26:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:38,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:38,495 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-15 11:26:38,495 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-15 11:26:38,496 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-02-15 11:26:38,498 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-15 11:26:38,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-15 11:26:39,011 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-15 11:26:39,012 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. [2019-02-15 11:26:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:39,012 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-15 11:26:39,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:39,012 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 [2019-02-15 11:26:39,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:39,025 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-15 11:26:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:39,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-15 11:26:39,147 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,148 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 [2019-02-15 11:26:39,267 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,288 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,290 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 [2019-02-15 11:26:39,370 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,371 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,372 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,373 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,374 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 [2019-02-15 11:26:39,461 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,462 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,463 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,464 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,472 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,474 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,475 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 [2019-02-15 11:26:39,556 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,557 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,558 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,559 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,561 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,562 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,563 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,565 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,567 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 [2019-02-15 11:26:39,670 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,671 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,673 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,674 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,676 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,681 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,682 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,683 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,684 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,684 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,686 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 [2019-02-15 11:26:39,835 WARN L181 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-02-15 11:26:39,840 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,841 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,842 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,843 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,844 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,847 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,848 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,849 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,850 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,851 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,852 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,853 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:39,855 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 [2019-02-15 11:26:39,856 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:39,914 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:39,976 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,040 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,107 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,199 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,268 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,354 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 [2019-02-15 11:26:40,362 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 [2019-02-15 11:26:40,382 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 [2019-02-15 11:26:40,397 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 [2019-02-15 11:26:40,414 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 [2019-02-15 11:26:40,432 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 [2019-02-15 11:26:40,454 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 [2019-02-15 11:26:40,471 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 [2019-02-15 11:26:40,519 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 [2019-02-15 11:26:40,521 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,598 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,661 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,708 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,746 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,776 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,799 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,821 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,841 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:40,947 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. [2019-02-15 11:26:40,947 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-02-15 11:26:41,009 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:41,010 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 [2019-02-15 11:26:41,011 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:41,268 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. [2019-02-15 11:26:41,268 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-02-15 11:26:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:41,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-15 11:26:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:41,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-15 11:26:41,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-15 11:26:41,344 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-15 11:26:41,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-15 11:26:41,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-15 11:26:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-15 11:26:41,345 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-02-15 11:26:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-15 11:26:52,482 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-02-15 11:26:52,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-02-15 11:26:52,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-15 11:26:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-15 11:26:52,483 INFO L225 Difference]: With dead ends: 54 [2019-02-15 11:26:52,483 INFO L226 Difference]: Without dead ends: 52 [2019-02-15 11:26:52,484 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-15 11:26:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-02-15 11:26:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2019-02-15 11:26:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-02-15 11:26:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-02-15 11:26:52,491 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-02-15 11:26:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-15 11:26:52,491 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-02-15 11:26:52,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-15 11:26:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-02-15 11:26:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-15 11:26:52,491 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 11:26:52,491 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-15 11:26:52,492 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-02-15 11:26:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-02-15 11:26:52,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 11:26:52,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:52,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:52,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 11:26:52,493 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 11:26:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 11:26:52,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:52,612 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-15 11:26:52,612 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-15 11:26:52,613 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-02-15 11:26:52,614 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-15 11:26:52,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-15 11:26:55,267 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-15 11:26:55,268 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. [2019-02-15 11:26:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 11:26:55,269 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-15 11:26:55,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 11:26:55,269 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 [2019-02-15 11:26:55,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 11:26:55,277 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-15 11:26:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 11:26:55,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-15 11:26:55,357 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2019-02-15 11:26:55,362 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 [2019-02-15 11:26:55,372 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,375 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,376 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 [2019-02-15 11:26:55,380 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,382 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,384 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,385 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 [2019-02-15 11:26:55,392 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,394 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,400 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,401 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,402 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 [2019-02-15 11:26:55,410 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,412 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,415 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,418 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,421 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,423 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 [2019-02-15 11:26:55,428 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,430 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,433 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,434 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,436 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,438 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 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 [2019-02-15 11:26:55,447 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,449 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,451 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,453 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,455 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,457 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,459 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,460 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 [2019-02-15 11:26:55,475 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 [2019-02-15 11:26:55,477 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,584 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,652 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,703 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,745 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,778 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,804 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,827 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,846 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:55,903 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,904 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 [2019-02-15 11:26:55,958 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,958 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:55,959 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 [2019-02-15 11:26:56,018 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,019 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,020 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,021 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,022 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 [2019-02-15 11:26:56,096 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,097 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,098 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,099 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,100 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,101 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,103 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 [2019-02-15 11:26:56,196 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,198 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,199 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,201 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,202 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,204 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,205 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,206 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,208 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 [2019-02-15 11:26:56,321 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-02-15 11:26:56,325 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,326 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,327 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,328 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,329 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,331 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,332 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,333 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,335 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,336 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,338 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 [2019-02-15 11:26:56,498 WARN L181 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-02-15 11:26:56,501 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,502 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,502 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,504 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,505 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,506 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,507 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,509 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,510 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,511 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,512 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,513 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:56,515 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 [2019-02-15 11:26:56,516 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,577 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,637 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,699 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,764 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,826 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,889 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 11:26:56,995 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. [2019-02-15 11:26:56,996 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-02-15 11:26:58,777 WARN L181 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 88 [2019-02-15 11:26:58,826 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 11:26:58,897 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 [2019-02-15 11:26:58,899 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-02-15 11:26:59,040 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2019-02-15 11:27:03,311 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. [2019-02-15 11:27:03,312 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1223 [2019-02-15 11:27:14,155 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-02-15 11:27:14,357 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-15 11:27:14,358 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 [2019-02-15 11:27:14,362 INFO L168 Benchmark]: Toolchain (without parser) took 55365.92 ms. Allocated memory was 132.1 MB in the beginning and 592.4 MB in the end (delta: 460.3 MB). Free memory was 107.0 MB in the beginning and 123.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 443.7 MB. Max. memory is 7.1 GB. [2019-02-15 11:27:14,363 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2019-02-15 11:27:14,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.91 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. [2019-02-15 11:27:14,364 INFO L168 Benchmark]: Boogie Preprocessor took 29.04 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: 900.1 kB). Peak memory consumption was 900.1 kB. Max. memory is 7.1 GB. [2019-02-15 11:27:14,365 INFO L168 Benchmark]: RCFGBuilder took 526.49 ms. Allocated memory is still 132.1 MB. Free memory was 103.1 MB in the beginning and 89.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-02-15 11:27:14,367 INFO L168 Benchmark]: TraceAbstraction took 54743.82 ms. Allocated memory was 132.1 MB in the beginning and 592.4 MB in the end (delta: 460.3 MB). Free memory was 89.3 MB in the beginning and 123.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 426.0 MB. Max. memory is 7.1 GB. [2019-02-15 11:27:14,378 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 0.20 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 62.91 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 29.04 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: 900.1 kB). Peak memory consumption was 900.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 526.49 ms. Allocated memory is still 132.1 MB. Free memory was 103.1 MB in the beginning and 89.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54743.82 ms. Allocated memory was 132.1 MB in the beginning and 592.4 MB in the end (delta: 460.3 MB). Free memory was 89.3 MB in the beginning and 123.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 426.0 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: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...