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_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:23:19,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:23:19,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:23:19,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:23:19,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:23:19,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:23:19,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:23:19,577 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:23:19,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:23:19,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:23:19,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 10:23:19,604 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-02-28 10:23:19,616 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:23:19,616 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:23:19,617 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:23:19,618 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:23:19,618 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:23:19,618 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:23:19,618 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:23:19,618 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:23:19,619 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:23:19,620 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:23:19,620 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:23:19,621 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:23:19,621 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:23:19,621 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:23:19,621 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:23:19,621 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:23:19,622 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:23:19,622 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:23:19,622 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:23:19,622 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:23:19,622 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:23:19,623 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:23:19,623 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:23:19,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:23:19,623 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:23:19,624 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:23:19,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:23:19,624 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:23:19,624 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:23:19,624 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:23:19,625 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:23:19,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:23:19,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:23:19,625 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:23:19,625 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:23:19,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:23:19,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:23:19,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:23:19,672 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:23:19,672 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:23:19,673 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl [2019-02-28 10:23:19,673 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl' [2019-02-28 10:23:19,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:23:19,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:23:19,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:19,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:23:19,729 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:23:19,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:19,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:23:19,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:23:19,793 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:23:19,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... [2019-02-28 10:23:19,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:23:19,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:23:19,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:23:19,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:23:19,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:23:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:23:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:23:20,417 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:23:20,417 INFO L286 CfgBuilder]: Removed 19 assue(true) statements. [2019-02-28 10:23:20,419 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:20 BoogieIcfgContainer [2019-02-28 10:23:20,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:23:20,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:23:20,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:23:20,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:23:20,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:19" (1/2) ... [2019-02-28 10:23:20,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a31c4cd and model type speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:23:20, skipping insertion in model container [2019-02-28 10:23:20,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:20" (2/2) ... [2019-02-28 10:23:20,434 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-limited.bpl [2019-02-28 10:23:20,444 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:23:20,452 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-02-28 10:23:20,470 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-02-28 10:23:20,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:23:20,510 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:23:20,510 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:23:20,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:23:20,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:23:20,511 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:23:20,511 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:23:20,511 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:23:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-02-28 10:23:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:23:20,548 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:20,551 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:23:20,554 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-02-28 10:23:20,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:20,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:20,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:20,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:20,622 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:20,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:23:20,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:23:20,766 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:23:20,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:23:20,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:23:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:20,783 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-02-28 10:23:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:20,950 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-02-28 10:23:20,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:23:20,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:23:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:20,967 INFO L225 Difference]: With dead ends: 37 [2019-02-28 10:23:20,967 INFO L226 Difference]: Without dead ends: 32 [2019-02-28 10:23:20,970 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 [2019-02-28 10:23:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-02-28 10:23:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2019-02-28 10:23:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-02-28 10:23:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2019-02-28 10:23:21,009 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2019-02-28 10:23:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:21,011 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2019-02-28 10:23:21,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:23:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2019-02-28 10:23:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:21,012 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:21,012 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:21,012 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:21,013 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2019-02-28 10:23:21,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:21,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:21,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:21,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:21,015 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:21,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:21,202 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:21,203 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:21,204 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2019-02-28 10:23:21,241 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:21,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:21,355 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:21,360 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 98 root evaluator evaluations with a maximum evaluation depth of 3. Performed 98 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:23:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:21,368 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:21,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:21,369 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 [2019-02-28 10:23:21,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:21,385 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:21,422 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2019-02-28 10:23:21,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:21,516 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:23:21,546 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,548 INFO L442 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 30 treesize of output 32 [2019-02-28 10:23:21,569 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,581 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,582 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,584 INFO L442 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 32 treesize of output 34 [2019-02-28 10:23:21,605 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,607 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,610 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,615 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,617 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,619 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,622 INFO L442 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 34 treesize of output 36 [2019-02-28 10:23:21,662 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,682 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,696 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,721 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,745 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,768 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,784 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,786 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,788 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,810 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,810 INFO L289 Elim1Store]: Index analysis took 170 ms [2019-02-28 10:23:21,812 INFO L442 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 36 treesize of output 38 [2019-02-28 10:23:21,849 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,874 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,899 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,927 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,952 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,978 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:21,990 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,000 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,009 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,014 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,016 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,019 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,023 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,027 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,029 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,029 INFO L289 Elim1Store]: Index analysis took 199 ms [2019-02-28 10:23:22,031 INFO L442 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 38 treesize of output 40 [2019-02-28 10:23:22,058 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,059 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,066 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,068 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,070 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,079 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,090 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,108 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,112 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,114 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,131 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,160 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,163 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,164 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,176 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,177 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,179 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,181 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,182 INFO L289 Elim1Store]: Index analysis took 125 ms [2019-02-28 10:23:22,185 INFO L442 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 40 treesize of output 42 [2019-02-28 10:23:22,199 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,205 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,207 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,212 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,214 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,216 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,239 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,264 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,282 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,287 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,308 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,333 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,358 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,376 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,381 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,383 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,386 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,388 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,392 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,394 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,395 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,397 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,398 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,399 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,401 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,402 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,404 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,406 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:22,406 INFO L289 Elim1Store]: Index analysis took 208 ms [2019-02-28 10:23:22,410 INFO L442 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:23:22,412 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,447 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,494 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,524 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,555 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,577 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,647 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:22,853 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,041 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,043 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,044 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,052 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,058 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,060 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,061 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,062 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,063 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,064 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,074 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,075 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,076 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,078 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2019-02-28 10:23:23,079 INFO L315 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,152 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,166 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,168 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,217 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:23,217 INFO L209 ElimStorePlain]: Needed 13 recursive calls to eliminate 8 variables, input treesize:94, output treesize:62 [2019-02-28 10:23:23,294 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,296 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,299 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,301 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,304 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,306 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,308 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,310 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,312 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,315 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,318 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,319 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,319 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,320 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,321 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,322 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,323 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,325 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,326 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,328 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,330 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,331 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,332 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,333 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,339 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,340 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,341 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,342 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:23,345 INFO L442 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:23:23,346 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:23,384 INFO L315 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. [2019-02-28 10:23:23,385 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:72, output treesize:64 [2019-02-28 10:23:48,807 WARN L181 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-02-28 10:23:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:48,809 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:23:48,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:48,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:48,845 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:48,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:48,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:48,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:48,847 INFO L87 Difference]: Start difference. First operand 18 states and 33 transitions. Second operand 6 states. [2019-02-28 10:35:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:35:16,509 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2019-02-28 10:35:16,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:35:16,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:35:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:35:16,511 INFO L225 Difference]: With dead ends: 63 [2019-02-28 10:35:16,511 INFO L226 Difference]: Without dead ends: 60 [2019-02-28 10:35:16,513 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:35:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-02-28 10:35:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 25. [2019-02-28 10:35:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-02-28 10:35:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 53 transitions. [2019-02-28 10:35:16,520 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 53 transitions. Word has length 3 [2019-02-28 10:35:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:35:16,520 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 53 transitions. [2019-02-28 10:35:16,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:35:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 53 transitions. [2019-02-28 10:35:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:35:16,521 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:35:16,521 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:35:16,521 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:35:16,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:35:16,522 INFO L82 PathProgramCache]: Analyzing trace with hash 30384, now seen corresponding path program 1 times [2019-02-28 10:35:16,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:35:16,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:35:16,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:35:16,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:35:16,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:35:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:35:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:35:16,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:35:16,657 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:35:16,657 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:35:16,657 INFO L207 CegarAbsIntRunner]: [0], [18], [35] [2019-02-28 10:35:16,662 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:35:16,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:35:16,673 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:35:16,673 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 98 root evaluator evaluations with a maximum evaluation depth of 3. Performed 98 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:35:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:35:16,674 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:35:16,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:35:16,674 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 [2019-02-28 10:35:16,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:35:16,683 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:35:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:35:16,698 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2019-02-28 10:35:16,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:35:16,707 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-02-28 10:35:16,724 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,726 INFO L442 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 30 treesize of output 32 [2019-02-28 10:35:16,735 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,736 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,737 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,739 INFO L442 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 32 treesize of output 34 [2019-02-28 10:35:16,745 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,748 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,749 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,750 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,751 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,752 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,754 INFO L442 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 34 treesize of output 36 [2019-02-28 10:35:16,772 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,773 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,774 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,775 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,777 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,778 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,780 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,782 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,785 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,787 INFO L442 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 36 treesize of output 38 [2019-02-28 10:35:16,799 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,800 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,801 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,803 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,805 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,806 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,808 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,810 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,812 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,813 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,815 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,817 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,820 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,821 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,822 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,824 INFO L442 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 38 treesize of output 40 [2019-02-28 10:35:16,830 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,831 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,832 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,834 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,835 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,837 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,839 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,840 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,842 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,844 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,846 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,847 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,849 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,851 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,853 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,856 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,858 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,860 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,867 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,868 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,870 INFO L442 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 40 treesize of output 42 [2019-02-28 10:35:16,889 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,890 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,892 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,894 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,895 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,897 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,899 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,900 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,902 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,904 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,906 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,908 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,909 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,916 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,918 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,928 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,929 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,930 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,932 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,933 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,935 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,937 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,939 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,940 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,942 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,944 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,946 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,951 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:16,952 INFO L442 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-02-28 10:35:16,953 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:35:16,975 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:16,998 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,033 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,055 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,078 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,101 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,124 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,199 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,206 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,210 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,210 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,211 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,213 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,214 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,219 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,220 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,220 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,230 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,231 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,232 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,233 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2019-02-28 10:35:17,233 INFO L315 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,236 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,238 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,240 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,311 INFO L315 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-02-28 10:35:17,312 INFO L209 ElimStorePlain]: Needed 13 recursive calls to eliminate 8 variables, input treesize:94, output treesize:62 [2019-02-28 10:35:17,409 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,410 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,411 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,412 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,413 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,415 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,416 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,417 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,418 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,420 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,421 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,422 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,424 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,425 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,426 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,428 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,429 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,430 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,431 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,433 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,434 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,435 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,453 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,454 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,455 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,456 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,457 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,458 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:35:17,463 INFO L442 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-02-28 10:35:17,464 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:35:17,502 INFO L315 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. [2019-02-28 10:35:17,503 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:72, output treesize:64 [2019-02-28 10:35:40,839 WARN L181 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-02-28 10:35:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:35:40,840 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:35:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 10:35:40,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:35:40,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:35:40,872 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:35:40,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:35:40,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:35:40,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:35:40,873 INFO L87 Difference]: Start difference. First operand 25 states and 53 transitions. Second operand 6 states. [2019-02-28 10:37:45,763 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:16092 -smt2 -in -t:200000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-02-28 10:37:45,767 INFO L168 Benchmark]: Toolchain (without parser) took 866040.30 ms. Allocated memory was 133.2 MB in the beginning and 256.9 MB in the end (delta: 123.7 MB). Free memory was 108.4 MB in the beginning and 183.7 MB in the end (delta: -75.2 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:45,768 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.2 MB. Free memory is still 109.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-28 10:37:45,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.94 ms. Allocated memory is still 133.2 MB. Free memory was 108.2 MB in the beginning and 105.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:45,769 INFO L168 Benchmark]: Boogie Preprocessor took 40.42 ms. Allocated memory is still 133.2 MB. Free memory was 105.9 MB in the beginning and 104.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:45,770 INFO L168 Benchmark]: RCFGBuilder took 585.76 ms. Allocated memory is still 133.2 MB. Free memory was 104.6 MB in the beginning and 91.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:45,771 INFO L168 Benchmark]: TraceAbstraction took 865342.93 ms. Allocated memory was 133.2 MB in the beginning and 256.9 MB in the end (delta: 123.7 MB). Free memory was 91.1 MB in the beginning and 183.7 MB in the end (delta: -92.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-02-28 10:37:45,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.2 MB. Free memory is still 109.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.94 ms. Allocated memory is still 133.2 MB. Free memory was 108.2 MB in the beginning and 105.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.42 ms. Allocated memory is still 133.2 MB. Free memory was 105.9 MB in the beginning and 104.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 585.76 ms. Allocated memory is still 133.2 MB. Free memory was 104.6 MB in the beginning and 91.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 865342.93 ms. Allocated memory was 133.2 MB in the beginning and 256.9 MB in the end (delta: 123.7 MB). Free memory was 91.1 MB in the beginning and 183.7 MB in the end (delta: -92.6 MB). Peak memory consumption was 31.1 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:16092 -smt2 -in -t:200000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...