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-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:17:00,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:17:00,729 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:17:00,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-02-28 10:17:00,804 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 10:17:00,825 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:17:00,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:17:00,826 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:17:00,827 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:17:00,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:17:00,827 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:17:00,827 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:17:00,827 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:17:00,828 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-28 10:17:00,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:17:00,829 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-28 10:17:00,829 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-28 10:17:00,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:17:00,829 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:17:00,830 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:17:00,830 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:17:00,830 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:17:00,831 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:17:00,832 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:17:00,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:17:00,833 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:17:00,834 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:17:00,834 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:17:00,834 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:17:00,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:17:00,835 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:17:00,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:17:00,835 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:17:00,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:17:00,836 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:17:00,836 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:17:00,836 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:17:00,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:17:00,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:17:00,837 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:17:00,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:17:00,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:17:00,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:17:00,909 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:17:00,909 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:17:00,910 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-02-28 10:17:00,911 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-02-28 10:17:00,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:17:00,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:17:00,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:17:00,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:17:00,974 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:17:00,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:17:01,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:17:01,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:17:01,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:17:01,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/1) ... [2019-02-28 10:17:01,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:17:01,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:17:01,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:17:01,095 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:17:01,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (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 10:17:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:17:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:17:01,640 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:17:01,641 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-02-28 10:17:01,642 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:17:01 BoogieIcfgContainer [2019-02-28 10:17:01,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:17:01,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:17:01,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:17:01,646 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:17:01,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:17:00" (1/2) ... [2019-02-28 10:17:01,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7dc5f and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:17:01, skipping insertion in model container [2019-02-28 10:17:01,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:17:01" (2/2) ... [2019-02-28 10:17:01,650 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-02-28 10:17:01,660 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:17:01,668 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-02-28 10:17:01,685 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-02-28 10:17:01,718 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:17:01,718 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:17:01,718 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:17:01,718 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:17:01,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:17:01,719 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:17:01,719 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:17:01,719 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:17:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-02-28 10:17:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:17:01,742 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:17:01,743 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:17:01,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:17:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:17:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-02-28 10:17:01,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:17:01,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:17:01,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:17:01,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:17:01,803 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:17:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:17:01,977 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 10:17:01,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:17:01,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:17:01,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:17:01,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:17:01,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:17:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:17:01,997 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-02-28 10:17:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:17:02,317 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-02-28 10:17:02,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:17:02,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:17:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:17:02,332 INFO L225 Difference]: With dead ends: 45 [2019-02-28 10:17:02,333 INFO L226 Difference]: Without dead ends: 40 [2019-02-28 10:17:02,336 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 [2019-02-28 10:17:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-02-28 10:17:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-02-28 10:17:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-02-28 10:17:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-02-28 10:17:02,390 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-02-28 10:17:02,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:17:02,391 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-02-28 10:17:02,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:17:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-02-28 10:17:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:17:02,392 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:17:02,392 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:17:02,393 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:17:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:17:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-02-28 10:17:02,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:17:02,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:17:02,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:17:02,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:17:02,395 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:17:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:17:02,591 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 10:17:02,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:17:02,592 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:17:02,593 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:17:02,598 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-02-28 10:17:02,652 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:17:02,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:17:02,766 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:17:02,767 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:17:02,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:17:02,777 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:17:02,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:17:02,778 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 10:17:02,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:17:02,793 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:17:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:17:02,834 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-02-28 10:17:02,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:17:02,973 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 33 treesize of output 36 [2019-02-28 10:17:03,002 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,004 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 36 treesize of output 38 [2019-02-28 10:17:03,022 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,024 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,028 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,030 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 38 treesize of output 40 [2019-02-28 10:17:03,049 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,051 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,056 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,057 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,059 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,061 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,063 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 40 treesize of output 42 [2019-02-28 10:17:03,091 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,093 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,097 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,103 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,106 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,111 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,114 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,116 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,118 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,122 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 42 treesize of output 44 [2019-02-28 10:17:03,142 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,144 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,146 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,147 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,154 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,156 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,158 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,160 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,162 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,165 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,167 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,169 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,171 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,173 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,188 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,192 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 44 treesize of output 46 [2019-02-28 10:17:03,218 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,219 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,223 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,225 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,227 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,229 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,231 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,233 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,235 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,237 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,246 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,267 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,293 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,321 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,339 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,344 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,365 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,380 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,381 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,383 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,385 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,386 INFO L289 Elim1Store]: Index analysis took 169 ms [2019-02-28 10:17:03,391 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 46 treesize of output 48 [2019-02-28 10:17:03,403 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,405 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,407 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,408 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,410 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,412 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,414 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,415 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,420 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,426 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,427 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,428 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,431 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,432 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,435 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,438 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,443 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,469 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,493 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,516 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,543 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,568 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,596 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,601 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,603 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,604 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,607 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,609 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,609 INFO L289 Elim1Store]: Index analysis took 208 ms [2019-02-28 10:17:03,612 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 50 [2019-02-28 10:17:03,632 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,634 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,636 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,638 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,639 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,640 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,642 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,643 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,647 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,649 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,651 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,653 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,655 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,657 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,658 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,660 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,661 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,663 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,665 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,667 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,669 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,670 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,672 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,675 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,676 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,678 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,680 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,682 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,683 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,687 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,701 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,702 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,703 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,705 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,707 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,708 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,713 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2019-02-28 10:17:03,738 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,740 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,743 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,745 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,747 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,752 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,754 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,757 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,760 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,762 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,764 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,765 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,767 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,769 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,770 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,772 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,774 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,778 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,779 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,780 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,782 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,785 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,787 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,788 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,823 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,830 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,835 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,836 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,837 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,838 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,840 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,842 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,843 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,845 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,847 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:17:03,848 INFO L289 Elim1Store]: Index analysis took 114 ms [2019-02-28 10:17:04,365 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-02-28 10:17:04,367 INFO L315 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,469 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,557 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,648 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,682 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,719 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,751 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,784 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,844 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:04,881 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,167 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-02-28 10:17:05,169 INFO L315 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,214 INFO L315 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,229 INFO L315 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,245 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,299 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,351 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,477 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,574 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,678 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:17:05,830 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:17:05,830 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-28 10:17:05,964 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-02-28 10:17:06,000 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-02-28 10:17:06,001 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:17:06,324 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:17:06,324 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-02-28 10:17:06,365 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 10:17:06,365 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:17:06,382 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 10:17:06,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:17:06,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:17:06,405 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:17:06,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:17:06,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:17:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:17:06,411 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-02-28 10:17:06,559 WARN L181 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2019-02-28 10:21:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:21:19,220 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-02-28 10:21:19,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:21:19,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:21:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:21:19,222 INFO L225 Difference]: With dead ends: 79 [2019-02-28 10:21:19,222 INFO L226 Difference]: Without dead ends: 77 [2019-02-28 10:21:19,223 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:21:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-02-28 10:21:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-02-28 10:21:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-28 10:21:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-02-28 10:21:19,231 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-02-28 10:21:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:21:19,231 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-02-28 10:21:19,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:21:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-02-28 10:21:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:21:19,232 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:21:19,232 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:21:19,233 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:21:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:21:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-02-28 10:21:19,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:21:19,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:21:19,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:21:19,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:21:19,235 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:21:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:21:19,314 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 10:21:19,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:21:19,315 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:21:19,315 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:21:19,315 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-02-28 10:21:19,317 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:21:19,318 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:21:19,332 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:21:19,332 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 10:21:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:21:19,332 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:21:19,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:21:19,333 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 10:21:19,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:21:19,343 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:21:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:21:19,355 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-02-28 10:21:19,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:21:19,373 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 33 treesize of output 36 [2019-02-28 10:21:19,384 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,385 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 36 treesize of output 38 [2019-02-28 10:21:19,390 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,392 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,394 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,396 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 38 treesize of output 40 [2019-02-28 10:21:19,433 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,458 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,483 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,507 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,536 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,550 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,550 INFO L289 Elim1Store]: Index analysis took 142 ms [2019-02-28 10:21:19,552 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 40 treesize of output 42 [2019-02-28 10:21:19,569 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,570 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,571 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,574 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,576 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,578 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,580 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,583 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,584 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,588 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,590 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 42 treesize of output 44 [2019-02-28 10:21:19,594 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,596 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,596 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,597 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,598 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,600 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,612 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,613 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,614 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,616 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,617 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,619 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,620 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,622 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,623 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,625 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 44 treesize of output 46 [2019-02-28 10:21:19,663 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,672 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,674 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,676 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,678 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,681 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,682 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,684 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,685 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,687 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,688 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,690 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,692 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,693 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,695 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,696 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,698 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,700 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,704 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,705 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,714 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,715 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 46 treesize of output 48 [2019-02-28 10:21:19,730 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,731 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,732 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,734 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,736 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,737 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,739 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,741 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,742 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,744 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,746 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,747 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,749 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,769 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,779 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,780 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,781 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,782 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,784 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,785 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,787 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,812 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,838 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,853 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,855 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,856 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,857 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,857 INFO L289 Elim1Store]: Index analysis took 129 ms [2019-02-28 10:21:19,860 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 50 [2019-02-28 10:21:19,873 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,874 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,875 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,876 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,877 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,878 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,880 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,881 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,883 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,884 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,886 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,887 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,889 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,890 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,892 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,894 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,895 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,897 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,898 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,900 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,901 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,903 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,904 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,906 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,908 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,909 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,911 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,912 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,914 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,915 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,917 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,918 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,920 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,921 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,923 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,924 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,927 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2019-02-28 10:21:19,935 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,936 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,937 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,939 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,940 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,942 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,944 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,945 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,947 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,948 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,950 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,951 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,953 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,954 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,956 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,958 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,959 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,961 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,962 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,964 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,965 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,967 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,968 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,970 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,972 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,973 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,975 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,976 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,978 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,979 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,981 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,983 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,984 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,986 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,987 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:19,989 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:21:20,062 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-02-28 10:21:20,065 INFO L315 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,094 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,123 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,259 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,288 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,326 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,360 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,388 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,415 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,442 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,777 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-02-28 10:21:20,778 INFO L315 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,788 INFO L315 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,801 INFO L315 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,832 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,872 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:20,933 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:21,015 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:21,110 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:21,208 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:21:21,369 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:21:21,369 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-28 10:21:21,475 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-02-28 10:21:21,477 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:21:21,623 INFO L315 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-28 10:21:21,624 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-02-28 10:21:21,710 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 10:21:21,711 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:21:21,742 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 10:21:21,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:21:21,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:21:21,761 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:21:21,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:21:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:21:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:21:21,762 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-02-28 10:21:49,938 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 10:21:49,942 INFO L168 Benchmark]: Toolchain (without parser) took 288969.79 ms. Allocated memory was 133.2 MB in the beginning and 313.5 MB in the end (delta: 180.4 MB). Free memory was 108.5 MB in the beginning and 86.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 202.4 MB. Max. memory is 7.1 GB. [2019-02-28 10:21:49,944 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory is still 109.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-28 10:21:49,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.25 ms. Allocated memory is still 133.2 MB. Free memory was 108.0 MB in the beginning and 105.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-02-28 10:21:49,945 INFO L168 Benchmark]: Boogie Preprocessor took 48.16 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 10:21:49,946 INFO L168 Benchmark]: RCFGBuilder took 548.13 ms. Allocated memory is still 133.2 MB. Free memory was 104.2 MB in the beginning and 90.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-02-28 10:21:49,947 INFO L168 Benchmark]: TraceAbstraction took 288298.30 ms. Allocated memory was 133.2 MB in the beginning and 313.5 MB in the end (delta: 180.4 MB). Free memory was 89.7 MB in the beginning and 86.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 183.7 MB. Max. memory is 7.1 GB. [2019-02-28 10:21:49,951 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 0.22 ms. Allocated memory is still 133.2 MB. Free memory is still 109.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.25 ms. Allocated memory is still 133.2 MB. Free memory was 108.0 MB in the beginning and 105.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.16 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 548.13 ms. Allocated memory is still 133.2 MB. Free memory was 104.2 MB in the beginning and 90.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 288298.30 ms. Allocated memory was 133.2 MB in the beginning and 313.5 MB in the end (delta: 180.4 MB). Free memory was 89.7 MB in the beginning and 86.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 183.7 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...