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-9-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 10:23:51,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 10:23:51,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 10:23:51,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 10:23:51,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 10:23:51,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 10:23:51,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 10:23:51,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 10:23:51,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 10:23:51,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 10:23:51,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 10:23:51,481 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 10:23:51,494 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 10:23:51,494 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 10:23:51,495 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 10:23:51,495 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 10:23:51,496 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 10:23:51,496 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 10:23:51,496 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 10:23:51,496 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 10:23:51,496 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-28 10:23:51,497 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 10:23:51,497 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-28 10:23:51,497 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-28 10:23:51,497 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 10:23:51,497 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 10:23:51,498 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 10:23:51,498 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 10:23:51,498 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 10:23:51,499 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 10:23:51,499 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 10:23:51,499 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 10:23:51,499 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 10:23:51,499 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 10:23:51,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 10:23:51,501 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 10:23:51,501 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 10:23:51,501 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 10:23:51,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 10:23:51,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 10:23:51,502 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 10:23:51,502 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 10:23:51,502 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 10:23:51,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 10:23:51,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 10:23:51,503 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 10:23:51,503 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 10:23:51,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 10:23:51,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 10:23:51,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 10:23:51,549 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 10:23:51,549 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 10:23:51,550 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-02-28 10:23:51,550 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-02-28 10:23:51,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 10:23:51,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 10:23:51,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:51,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 10:23:51,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 10:23:51,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 10:23:51,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 10:23:51,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 10:23:51,651 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 10:23:51,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/1) ... [2019-02-28 10:23:51,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 10:23:51,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 10:23:51,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 10:23:51,677 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 10:23:51,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (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 10:23:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 10:23:51,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 10:23:52,210 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 10:23:52,211 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-02-28 10:23:52,212 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:52 BoogieIcfgContainer [2019-02-28 10:23:52,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 10:23:52,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 10:23:52,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 10:23:52,219 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 10:23:52,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 10:23:51" (1/2) ... [2019-02-28 10:23:52,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645ed788 and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 10:23:52, skipping insertion in model container [2019-02-28 10:23:52,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 10:23:52" (2/2) ... [2019-02-28 10:23:52,227 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-02-28 10:23:52,238 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 10:23:52,253 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-02-28 10:23:52,271 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-02-28 10:23:52,314 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 10:23:52,314 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 10:23:52,314 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 10:23:52,315 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 10:23:52,315 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 10:23:52,315 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 10:23:52,315 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 10:23:52,315 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 10:23:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-02-28 10:23:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 10:23:52,347 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:52,348 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 10:23:52,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:52,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-02-28 10:23:52,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:52,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:52,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:52,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:52,416 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:52,588 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 10:23:52,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 10:23:52,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 10:23:52,591 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 10:23:52,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 10:23:52,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 10:23:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 10:23:52,616 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-02-28 10:23:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:23:52,859 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-02-28 10:23:52,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 10:23:52,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 10:23:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:23:52,875 INFO L225 Difference]: With dead ends: 41 [2019-02-28 10:23:52,875 INFO L226 Difference]: Without dead ends: 36 [2019-02-28 10:23:52,878 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 10:23:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-02-28 10:23:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-02-28 10:23:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-02-28 10:23:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-02-28 10:23:52,913 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-02-28 10:23:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:23:52,926 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-02-28 10:23:52,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 10:23:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-02-28 10:23:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:23:52,929 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:23:52,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:23:52,930 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:23:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:52,931 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-02-28 10:23:52,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:23:52,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:52,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:52,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:23:52,934 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:23:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:53,282 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 10:23:53,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:53,282 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:23:53,283 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:23:53,288 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-02-28 10:23:53,326 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:23:53,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:23:53,408 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:23:53,409 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 94 root evaluator evaluations with a maximum evaluation depth of 2. Performed 94 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 10:23:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:23:53,416 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:23:53,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:23:53,416 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 10:23:53,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:23:53,428 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:23:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:23:53,463 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-02-28 10:23:53,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:23:53,524 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 30 treesize of output 33 [2019-02-28 10:23:53,567 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,569 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 33 treesize of output 35 [2019-02-28 10:23:53,605 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,617 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,621 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,623 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 35 treesize of output 37 [2019-02-28 10:23:53,643 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,648 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,650 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,671 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,673 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,675 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,680 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 37 treesize of output 39 [2019-02-28 10:23:53,695 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,717 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,728 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,738 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,762 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,781 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,783 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,784 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,786 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,789 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,792 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 39 treesize of output 41 [2019-02-28 10:23:53,814 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,818 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,828 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,854 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,871 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,893 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,919 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,944 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,964 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:53,989 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,022 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,044 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,067 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,094 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,096 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,097 INFO L289 Elim1Store]: Index analysis took 288 ms [2019-02-28 10:23:54,102 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 41 treesize of output 43 [2019-02-28 10:23:54,177 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,186 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,188 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,191 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,192 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,195 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,197 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,200 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,202 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,212 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,217 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,220 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,225 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,227 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,230 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,233 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,241 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,242 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,243 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,245 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,247 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,252 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 43 treesize of output 45 [2019-02-28 10:23:54,263 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,264 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,265 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,267 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,271 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,272 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,274 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,275 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,277 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,304 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,326 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,348 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,371 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,373 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,375 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,388 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,390 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,394 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,396 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,398 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,399 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,400 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,402 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,404 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,405 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,408 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,410 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,411 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,412 INFO L289 Elim1Store]: Index analysis took 150 ms [2019-02-28 10:23:54,415 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 45 treesize of output 47 [2019-02-28 10:23:54,448 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,450 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,452 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,453 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,454 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,456 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,459 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,460 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,462 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,464 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,465 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,467 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,469 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,470 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,471 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,472 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,473 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,475 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,476 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,478 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,480 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,481 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,483 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,486 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,487 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,489 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,490 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,492 INFO L187 IndexEqualityManager]: detected not equals via solver [2019-02-28 10:23:54,697 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 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 70 [2019-02-28 10:23:54,700 INFO L315 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:54,929 INFO L315 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,042 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,088 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,142 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,170 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,194 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,218 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,243 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,410 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:23:55,411 INFO L315 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,425 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,452 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,503 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,579 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,668 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,749 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:55,911 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:23:56,025 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:23:56,026 INFO L209 ElimStorePlain]: Needed 18 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-02-28 10:23:56,209 WARN L181 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-02-28 10:23:56,237 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 10:23:56,238 INFO L315 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-28 10:23:56,408 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 10:23:56,409 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:127 [2019-02-28 10:23:56,450 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 10:23:56,450 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-02-28 10:23:56,481 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 10:23:56,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-28 10:23:56,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-28 10:23:56,506 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-28 10:23:56,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-28 10:23:56,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-28 10:23:56,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-28 10:23:56,507 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-02-28 10:24:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 10:24:08,720 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-02-28 10:24:08,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-28 10:24:08,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-28 10:24:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 10:24:08,725 INFO L225 Difference]: With dead ends: 71 [2019-02-28 10:24:08,725 INFO L226 Difference]: Without dead ends: 69 [2019-02-28 10:24:08,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-28 10:24:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-02-28 10:24:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-02-28 10:24:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-02-28 10:24:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-02-28 10:24:08,735 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-02-28 10:24:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 10:24:08,735 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-02-28 10:24:08,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-28 10:24:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-02-28 10:24:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 10:24:08,736 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 10:24:08,736 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 10:24:08,736 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-02-28 10:24:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:24:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-02-28 10:24:08,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 10:24:08,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:24:08,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:24:08,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 10:24:08,738 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 10:24:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:24:08,850 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 10:24:08,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:24:08,851 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 10:24:08,851 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 10:24:08,851 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-02-28 10:24:08,854 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-28 10:24:08,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 10:24:08,864 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-28 10:24:08,864 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 94 root evaluator evaluations with a maximum evaluation depth of 2. Performed 94 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 10:24:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 10:24:08,865 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-28 10:24:08,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 10:24:08,865 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 10:24:08,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 10:24:08,877 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-28 10:24:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 10:24:08,884 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-02-28 10:24:08,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-02-28 10:24:09,067 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-02-28 10:24:09,068 INFO L315 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,097 INFO L315 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,112 INFO L315 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,130 INFO L315 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,155 INFO L315 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,277 INFO L315 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,330 INFO L315 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,417 INFO L315 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,506 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-02-28 10:24:09,513 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2019-02-28 10:24:09,528 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2019-02-28 10:24:09,535 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2019-02-28 10:24:09,543 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 25 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-02-28 10:24:09,568 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 27 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2019-02-28 10:24:09,589 INFO L442 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2019-02-28 10:24:09,610 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 45 treesize of output 47 [2019-02-28 10:24:09,740 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 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 70 [2019-02-28 10:24:09,742 INFO L315 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,759 INFO L315 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,780 INFO L315 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,800 INFO L315 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,821 INFO L315 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,840 INFO L315 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,861 INFO L315 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,891 INFO L315 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:09,931 INFO L315 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-28 10:24:10,052 INFO L315 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-02-28 10:24:10,052 INFO L209 ElimStorePlain]: Needed 18 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158