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-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-08 13:56:58,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-08 13:56:58,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-08 13:56:58,732 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-08 13:56:58,732 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-08 13:56:58,734 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-08 13:56:58,735 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-08 13:56:58,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-08 13:56:58,741 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-08 13:56:58,741 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-08 13:56:58,743 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-08 13:56:58,791 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 [2019-01-08 13:56:58,811 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-08 13:56:58,811 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-08 13:56:58,813 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-08 13:56:58,813 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-08 13:56:58,813 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-08 13:56:58,813 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-08 13:56:58,813 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-08 13:56:58,814 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-08 13:56:58,814 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-08 13:56:58,814 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-08 13:56:58,814 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-08 13:56:58,814 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-08 13:56:58,818 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-08 13:56:58,818 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-08 13:56:58,819 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-08 13:56:58,819 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-08 13:56:58,819 INFO L133 SettingsManager]: * Use SBE=true [2019-01-08 13:56:58,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-08 13:56:58,819 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-08 13:56:58,821 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-08 13:56:58,821 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-08 13:56:58,822 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-08 13:56:58,822 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-08 13:56:58,822 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-08 13:56:58,822 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-08 13:56:58,822 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-08 13:56:58,823 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-08 13:56:58,823 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-08 13:56:58,823 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-08 13:56:58,823 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-08 13:56:58,823 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-08 13:56:58,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 13:56:58,824 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-08 13:56:58,824 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-08 13:56:58,824 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-08 13:56:58,824 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-08 13:56:58,824 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-08 13:56:58,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-08 13:56:58,825 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-08 13:56:58,825 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-08 13:56:58,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-08 13:56:58,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-08 13:56:58,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-08 13:56:58,875 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-08 13:56:58,876 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-08 13:56:58,876 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl [2019-01-08 13:56:58,877 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl' [2019-01-08 13:56:58,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-08 13:56:58,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-08 13:56:58,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-08 13:56:58,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-08 13:56:58,923 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-08 13:56:58,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:58,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:58,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-08 13:56:58,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-08 13:56:58,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-08 13:56:58,984 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-08 13:56:58,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:58,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:58,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:58,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:59,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:59,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:59,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/1) ... [2019-01-08 13:56:59,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-08 13:56:59,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-08 13:56:59,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-08 13:56:59,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-08 13:56:59,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (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:8192 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 13:56:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-08 13:56:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-08 13:56:59,660 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-08 13:56:59,660 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-08 13:56:59,661 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 01:56:59 BoogieIcfgContainer [2019-01-08 13:56:59,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-08 13:56:59,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-08 13:56:59,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-08 13:56:59,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-08 13:56:59,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 01:56:58" (1/2) ... [2019-01-08 13:56:59,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6025a534 and model type speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 01:56:59, skipping insertion in model container [2019-01-08 13:56:59,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 01:56:59" (2/2) ... [2019-01-08 13:56:59,670 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-limited.bpl [2019-01-08 13:56:59,679 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-08 13:56:59,688 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-08 13:56:59,704 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-08 13:56:59,736 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-08 13:56:59,736 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-08 13:56:59,737 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-08 13:56:59,737 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-08 13:56:59,737 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-08 13:56:59,737 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-08 13:56:59,738 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-08 13:56:59,738 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-08 13:56:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-08 13:56:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-08 13:56:59,758 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:56:59,759 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-08 13:56:59,762 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:56:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:56:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-08 13:56:59,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:56:59,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:59,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:56:59,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:56:59,815 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:56:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:56:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:56:59,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 13:56:59,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-08 13:56:59,989 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 13:56:59,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-08 13:57:00,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-08 13:57:00,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 13:57:00,012 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-08 13:57:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:57:00,305 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-08 13:57:00,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 13:57:00,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-08 13:57:00,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:57:00,321 INFO L225 Difference]: With dead ends: 45 [2019-01-08 13:57:00,321 INFO L226 Difference]: Without dead ends: 40 [2019-01-08 13:57:00,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 13:57:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-08 13:57:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-08 13:57:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-08 13:57:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-08 13:57:00,366 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-08 13:57:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:57:00,368 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-08 13:57:00,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-08 13:57:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-08 13:57:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 13:57:00,369 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:57:00,369 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 13:57:00,370 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:57:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:57:00,370 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-08 13:57:00,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:57:00,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:57:00,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:57:00,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:57:00,372 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:57:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:57:00,662 WARN L181 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-08 13:57:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:57:00,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:57:00,728 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:57:00,729 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 13:57:00,731 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-08 13:57:00,774 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 13:57:00,774 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 13:57:00,860 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 13:57:00,861 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 13:57:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:57:00,867 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 13:57:00,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:57:00,867 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 13:57:00,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:57:00,878 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:57:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:57:00,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:57:01,490 WARN L181 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-08 13:57:01,523 INFO L478 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 [2019-01-08 13:57:01,565 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,569 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-08 13:57:01,585 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,587 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,589 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-08 13:57:01,605 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,608 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,634 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,636 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-08 13:57:01,659 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,693 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,699 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-08 13:57:01,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,724 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,728 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,731 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-08 13:57:01,760 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,767 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,775 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,779 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-08 13:57:01,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,826 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,829 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-08 13:57:01,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,861 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,905 INFO L478 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 196 [2019-01-08 13:57:01,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:01,987 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,012 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,044 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,090 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,131 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:02,144 INFO L303 Elim1Store]: Index analysis took 228 ms [2019-01-08 13:57:02,147 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-08 13:57:02,150 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:02,726 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:02,954 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,076 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,148 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,209 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,258 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,325 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,363 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,394 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:03,511 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,515 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-08 13:57:03,539 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-08 13:57:03,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,605 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,606 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,608 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-08 13:57:03,620 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-08 13:57:03,801 WARN L181 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-01-08 13:57:03,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:03,859 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-08 13:57:04,010 WARN L181 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-08 13:57:04,058 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,110 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,112 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,118 INFO L303 Elim1Store]: Index analysis took 103 ms [2019-01-08 13:57:04,120 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-08 13:57:04,150 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-08 13:57:04,341 WARN L181 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-08 13:57:04,377 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,379 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,389 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-08 13:57:04,391 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,411 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,414 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,419 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,422 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,424 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,427 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,434 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:57:04,487 INFO L267 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. [2019-01-08 13:57:04,488 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-08 13:57:04,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,711 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,716 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,721 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,735 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,738 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,739 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,741 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,742 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,743 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,746 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,747 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,748 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,752 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,755 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,756 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,762 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,766 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,768 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,770 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,772 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,779 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,782 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,783 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,784 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:57:04,786 INFO L303 Elim1Store]: Index analysis took 120 ms [2019-01-08 13:57:04,790 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 231 [2019-01-08 13:57:04,792 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 13:57:05,226 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-08 13:57:05,226 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-08 13:57:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:57:08,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:57:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:57:08,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:57:08,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 13:57:08,094 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:57:08,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 13:57:08,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 13:57:08,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 13:57:08,096 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-08 13:58:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:58:01,192 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-08 13:58:01,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-08 13:58:01,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-08 13:58:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:58:01,195 INFO L225 Difference]: With dead ends: 79 [2019-01-08 13:58:01,195 INFO L226 Difference]: Without dead ends: 77 [2019-01-08 13:58:01,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-08 13:58:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-08 13:58:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-08 13:58:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-08 13:58:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-08 13:58:01,205 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-08 13:58:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:58:01,206 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-08 13:58:01,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 13:58:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-08 13:58:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 13:58:01,206 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:58:01,206 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 13:58:01,207 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:58:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:58:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-08 13:58:01,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:58:01,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:58:01,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:58:01,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:58:01,209 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:58:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:58:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:58:01,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:58:01,316 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:58:01,317 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 13:58:01,317 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-08 13:58:01,319 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 13:58:01,319 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 13:58:01,334 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 13:58:01,335 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 13:58:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:58:01,335 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 13:58:01,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:58:01,335 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 13:58:01,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:58:01,347 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:58:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:58:01,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:58:01,485 WARN L181 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-01-08 13:58:01,490 INFO L478 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 [2019-01-08 13:58:01,502 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-08 13:58:01,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,511 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-08 13:58:01,518 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,522 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-08 13:58:01,561 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,563 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,565 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,568 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,571 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-08 13:58:01,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,633 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,641 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,643 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,646 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,647 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-08 13:58:01,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,680 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,682 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,686 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-08 13:58:01,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,716 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,741 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,743 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-08 13:58:01,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,926 INFO L303 Elim1Store]: Index analysis took 176 ms [2019-01-08 13:58:01,927 INFO L478 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 196 [2019-01-08 13:58:01,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,963 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,964 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,976 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:01,979 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-08 13:58:01,981 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,285 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,381 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,457 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,519 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,580 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,629 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,665 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,699 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,727 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:02,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,819 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 84 [2019-01-08 13:58:02,843 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2019-01-08 13:58:02,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,866 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 73 [2019-01-08 13:58:02,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,877 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 81 [2019-01-08 13:58:02,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:02,933 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-08 13:58:03,040 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-08 13:58:03,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,050 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,052 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,054 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,056 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,058 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,060 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,063 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-08 13:58:03,070 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-08 13:58:03,290 WARN L181 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-08 13:58:03,298 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,300 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,302 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,303 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,310 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-08 13:58:03,311 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,315 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,319 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,322 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,326 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,329 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,332 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,336 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,390 INFO L267 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. [2019-01-08 13:58:03,391 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:141, output treesize:78 [2019-01-08 13:58:03,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,473 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,475 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,476 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,480 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,481 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,483 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,485 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,488 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,490 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,493 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,495 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,498 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,502 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,507 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,515 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,517 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,518 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,525 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,527 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,529 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,532 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,534 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,535 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,537 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,539 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,541 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,542 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,544 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:03,548 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-08 13:58:03,550 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:03,801 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-08 13:58:03,802 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-08 13:58:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:58:06,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:58:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:58:06,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:58:06,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 13:58:06,885 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:58:06,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 13:58:06,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 13:58:06,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 13:58:06,886 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-08 13:58:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:58:57,732 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2019-01-08 13:58:57,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-08 13:58:57,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-08 13:58:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:58:57,734 INFO L225 Difference]: With dead ends: 79 [2019-01-08 13:58:57,735 INFO L226 Difference]: Without dead ends: 77 [2019-01-08 13:58:57,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=31, Invalid=40, Unknown=1, NotChecked=0, Total=72 [2019-01-08 13:58:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-08 13:58:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 31. [2019-01-08 13:58:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-08 13:58:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 75 transitions. [2019-01-08 13:58:57,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 75 transitions. Word has length 3 [2019-01-08 13:58:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:58:57,747 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 75 transitions. [2019-01-08 13:58:57,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 13:58:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 75 transitions. [2019-01-08 13:58:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 13:58:57,750 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:58:57,750 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 13:58:57,751 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:58:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:58:57,752 INFO L82 PathProgramCache]: Analyzing trace with hash 30020, now seen corresponding path program 1 times [2019-01-08 13:58:57,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:58:57,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:58:57,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:58:57,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:58:57,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:58:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:58:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:58:57,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:58:57,915 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:58:57,916 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 13:58:57,916 INFO L207 CegarAbsIntRunner]: [0], [6], [43] [2019-01-08 13:58:57,917 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 13:58:57,917 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 13:58:57,931 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 13:58:57,931 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 13:58:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:58:57,931 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 13:58:57,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:58:57,932 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 13:58:57,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:58:57,944 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:58:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:58:57,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:58:58,177 WARN L181 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-08 13:58:58,183 INFO L478 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 [2019-01-08 13:58:58,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,192 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-08 13:58:58,204 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-08 13:58:58,215 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,219 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,224 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-08 13:58:58,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,239 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-08 13:58:58,246 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,248 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,253 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,255 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-08 13:58:58,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,267 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,270 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-08 13:58:58,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,296 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,299 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-08 13:58:58,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,373 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,376 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,379 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,384 INFO L478 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 196 [2019-01-08 13:58:58,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,403 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:58,415 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-08 13:58:58,417 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:58,614 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:58,747 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:58,817 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:58,911 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:58,969 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,013 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,052 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,088 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,119 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,219 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,220 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-08 13:58:59,227 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-08 13:58:59,332 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2019-01-08 13:58:59,348 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,352 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,355 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,356 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,357 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-08 13:58:59,367 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-08 13:58:59,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,440 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,441 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,443 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,445 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-08 13:58:59,548 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-08 13:58:59,590 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,592 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,594 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,599 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,600 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,603 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-08 13:58:59,624 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-08 13:58:59,785 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-08 13:58:59,791 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,792 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,794 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,795 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,796 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,797 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,799 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,800 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-08 13:58:59,802 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,810 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,813 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,815 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,817 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,820 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,822 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,825 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:58:59,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-08 13:58:59,874 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 11 variables, input treesize:155, output treesize:78 [2019-01-08 13:58:59,913 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,914 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,918 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,928 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,932 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,934 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,935 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,937 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,939 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,940 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,942 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,945 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,959 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,963 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,965 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,976 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,980 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:58:59,984 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-08 13:58:59,986 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 13:59:00,228 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-08 13:59:00,229 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-08 13:59:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:59:00,248 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:59:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:59:00,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-08 13:59:00,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-01-08 13:59:00,277 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 13:59:00,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-08 13:59:00,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-08 13:59:00,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-08 13:59:00,278 INFO L87 Difference]: Start difference. First operand 31 states and 75 transitions. Second operand 4 states. [2019-01-08 13:59:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 13:59:00,364 INFO L93 Difference]: Finished difference Result 37 states and 121 transitions. [2019-01-08 13:59:00,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 13:59:00,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-08 13:59:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 13:59:00,366 INFO L225 Difference]: With dead ends: 37 [2019-01-08 13:59:00,366 INFO L226 Difference]: Without dead ends: 36 [2019-01-08 13:59:00,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-08 13:59:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-08 13:59:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-01-08 13:59:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-01-08 13:59:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 120 transitions. [2019-01-08 13:59:00,375 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 120 transitions. Word has length 3 [2019-01-08 13:59:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 13:59:00,375 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 120 transitions. [2019-01-08 13:59:00,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-08 13:59:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 120 transitions. [2019-01-08 13:59:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 13:59:00,376 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 13:59:00,376 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 13:59:00,376 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-01-08 13:59:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:59:00,377 INFO L82 PathProgramCache]: Analyzing trace with hash 31074, now seen corresponding path program 1 times [2019-01-08 13:59:00,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 13:59:00,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:59:00,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:59:00,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 13:59:00,378 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 13:59:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:59:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:59:00,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:59:00,489 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 13:59:00,489 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-08 13:59:00,489 INFO L207 CegarAbsIntRunner]: [0], [40], [43] [2019-01-08 13:59:00,490 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-08 13:59:00,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 13:59:00,500 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 13:59:00,500 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 13:59:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 13:59:00,501 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 13:59:00,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 13:59:00,501 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-08 13:59:00,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 13:59:00,513 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 13:59:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 13:59:00,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 13:59:00,664 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-08 13:59:00,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,671 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-08 13:59:00,682 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-08 13:59:00,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,711 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-08 13:59:00,723 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-08 13:59:00,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,791 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,792 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,795 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,809 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-08 13:59:00,914 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-08 13:59:00,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,927 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:00,933 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-08 13:59:00,945 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-08 13:59:01,109 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-08 13:59:01,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,119 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,122 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,127 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-08 13:59:01,128 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,139 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,142 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,145 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,148 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,151 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,153 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,156 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,186 INFO L478 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 [2019-01-08 13:59:01,190 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,191 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-08 13:59:01,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,202 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-08 13:59:01,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,207 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,209 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,210 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-08 13:59:01,214 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,215 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,217 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,219 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-08 13:59:01,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,337 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,359 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,359 INFO L303 Elim1Store]: Index analysis took 137 ms [2019-01-08 13:59:01,361 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-08 13:59:01,398 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,424 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,485 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,501 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,501 INFO L303 Elim1Store]: Index analysis took 138 ms [2019-01-08 13:59:01,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-08 13:59:01,546 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,646 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,694 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,695 INFO L303 Elim1Store]: Index analysis took 189 ms [2019-01-08 13:59:01,696 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-08 13:59:01,738 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,748 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,750 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,752 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,754 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,756 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,759 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,761 INFO L478 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 196 [2019-01-08 13:59:01,771 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,775 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,776 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,777 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,780 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:01,782 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-08 13:59:01,784 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-08 13:59:01,931 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,022 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,093 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,147 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,190 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,223 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,252 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,277 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,303 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,354 INFO L267 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. [2019-01-08 13:59:02,355 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-08 13:59:02,381 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,389 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,390 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,391 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,393 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,394 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,395 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,398 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,401 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,402 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,404 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,418 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,419 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,420 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,422 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,423 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,424 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,426 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,435 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-08 13:59:02,439 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-08 13:59:02,441 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-08 13:59:02,682 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-08 13:59:02,683 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-08 13:59:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:59:05,664 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 13:59:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 13:59:05,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 13:59:05,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-08 13:59:05,738 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 13:59:05,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 13:59:05,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 13:59:05,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-08 13:59:05,739 INFO L87 Difference]: Start difference. First operand 35 states and 120 transitions. Second operand 6 states.