java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 17:33:50,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 17:33:50,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 17:33:50,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 17:33:50,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 17:33:50,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 17:33:50,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 17:33:50,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 17:33:50,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 17:33:50,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 17:33:50,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-31 17:33:50,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-31 17:33:50,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-31 17:33:50,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-31 17:33:50,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-31 17:33:50,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-31 17:33:50,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-31 17:33:50,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-31 17:33:50,802 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-31 17:33:50,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-31 17:33:50,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-31 17:33:50,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-31 17:33:50,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-01-31 17:33:50,830 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-01-31 17:33:50,845 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 17:33:50,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 17:33:50,846 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 17:33:50,846 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 17:33:50,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 17:33:50,847 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 17:33:50,847 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 17:33:50,847 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 17:33:50,848 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 17:33:50,848 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-31 17:33:50,848 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-31 17:33:50,848 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 17:33:50,848 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 17:33:50,849 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 17:33:50,850 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 17:33:50,850 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 17:33:50,850 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 17:33:50,850 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 17:33:50,850 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 17:33:50,851 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 17:33:50,851 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 17:33:50,851 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 17:33:50,851 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 17:33:50,851 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 17:33:50,852 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 17:33:50,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 17:33:50,854 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 17:33:50,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 17:33:50,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 17:33:50,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 17:33:50,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:33:50,856 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 17:33:50,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 17:33:50,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 17:33:50,856 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 17:33:50,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 17:33:50,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 17:33:50,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 17:33:50,857 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 17:33:50,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 17:33:50,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 17:33:50,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 17:33:50,922 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 17:33:50,922 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 17:33:50,923 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-31 17:33:50,923 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-31 17:33:50,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 17:33:50,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 17:33:50,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 17:33:50,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 17:33:50,968 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 17:33:50,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:50,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 17:33:51,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 17:33:51,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 17:33:51,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 17:33:51,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/1) ... [2019-01-31 17:33:51,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 17:33:51,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 17:33:51,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 17:33:51,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 17:33:51,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:33:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 17:33:51,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 17:33:51,702 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 17:33:51,703 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-31 17:33:51,704 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:51 BoogieIcfgContainer [2019-01-31 17:33:51,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 17:33:51,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-31 17:33:51,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-31 17:33:51,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-31 17:33:51,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:33:50" (1/2) ... [2019-01-31 17:33:51,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e7438b and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:33:51, skipping insertion in model container [2019-01-31 17:33:51,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:51" (2/2) ... [2019-01-31 17:33:51,712 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-31 17:33:51,722 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-31 17:33:51,734 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-31 17:33:51,751 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-31 17:33:51,784 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-31 17:33:51,784 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-31 17:33:51,785 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-31 17:33:51,785 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-31 17:33:51,785 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-31 17:33:51,785 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-31 17:33:51,785 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-31 17:33:51,786 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-31 17:33:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-31 17:33:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-31 17:33:51,808 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:33:51,809 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-31 17:33:51,812 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:33:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:33:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-31 17:33:51,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:33:51,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:33:51,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:33:51,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:33:51,877 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:33:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:33:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:33:52,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-31 17:33:52,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-31 17:33:52,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-31 17:33:52,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-31 17:33:52,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-31 17:33:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-31 17:33:52,091 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-31 17:33:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:33:52,416 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-31 17:33:52,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-31 17:33:52,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-31 17:33:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:33:52,434 INFO L225 Difference]: With dead ends: 45 [2019-01-31 17:33:52,434 INFO L226 Difference]: Without dead ends: 40 [2019-01-31 17:33:52,437 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 [2019-01-31 17:33:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-31 17:33:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-31 17:33:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-31 17:33:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-31 17:33:52,489 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-31 17:33:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:33:52,490 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-31 17:33:52,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-31 17:33:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-31 17:33:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:33:52,491 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:33:52,491 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:33:52,492 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:33:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:33:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-31 17:33:52,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:33:52,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:33:52,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:33:52,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:33:52,494 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:33:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:33:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:33:52,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:33:52,677 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:33:52,678 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:33:52,680 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-31 17:33:52,731 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-31 17:33:52,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:33:53,821 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:33:53,822 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-31 17:33:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:33:53,829 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:33:53,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:33:53,830 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 [2019-01-31 17:33:53,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:33:53,847 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:33:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:33:53,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:33:54,187 WARN L181 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-31 17:33:54,224 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-31 17:33:54,246 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 [2019-01-31 17:33:54,292 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,314 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,316 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 [2019-01-31 17:33:54,358 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,384 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,386 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 [2019-01-31 17:33:54,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,453 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,478 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,504 INFO L303 Elim1Store]: Index analysis took 115 ms [2019-01-31 17:33:54,505 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 [2019-01-31 17:33:54,547 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,577 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,603 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 [2019-01-31 17:33:54,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,661 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,751 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,751 INFO L303 Elim1Store]: Index analysis took 143 ms [2019-01-31 17:33:54,753 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 [2019-01-31 17:33:54,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,876 INFO L303 Elim1Store]: Index analysis took 117 ms [2019-01-31 17:33:54,877 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 [2019-01-31 17:33:54,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:54,990 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:55,016 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:55,038 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:55,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:55,077 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:55,078 INFO L303 Elim1Store]: Index analysis took 190 ms [2019-01-31 17:33:55,081 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 [2019-01-31 17:33:55,198 INFO L303 Elim1Store]: Index analysis took 108 ms [2019-01-31 17:33:55,201 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-31 17:33:55,203 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-31 17:33:55,946 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,100 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,293 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,408 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,463 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,498 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,530 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,559 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,588 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:56,664 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,666 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 146 treesize of output 140 [2019-01-31 17:33:56,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,745 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-31 17:33:56,850 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-31 17:33:56,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,871 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:56,872 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 106 treesize of output 123 [2019-01-31 17:33:56,979 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-01-31 17:33:57,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,079 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,101 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,124 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,124 INFO L303 Elim1Store]: Index analysis took 142 ms [2019-01-31 17:33:57,126 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 122 [2019-01-31 17:33:57,251 WARN L181 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-31 17:33:57,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,260 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,263 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,264 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,267 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,270 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 130 [2019-01-31 17:33:57,399 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-31 17:33:57,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,415 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,416 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,420 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 61 treesize of output 145 [2019-01-31 17:33:57,602 WARN L181 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-31 17:33:57,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,608 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,610 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,611 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,612 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,615 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,616 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,640 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,641 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,645 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,646 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:57,648 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-31 17:33:58,018 WARN L181 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-31 17:33:58,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,025 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,027 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,032 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,033 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,038 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,040 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:58,043 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 145 [2019-01-31 17:33:58,044 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,154 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,256 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,361 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,459 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,564 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,670 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,773 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:33:58,922 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. [2019-01-31 17:33:58,922 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-31 17:33:59,076 WARN L181 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-01-31 17:33:59,142 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:33:59,145 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-01-31 17:33:59,147 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:33:59,353 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:33:59,354 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-31 17:33:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:33:59,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:33:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:33:59,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:33:59,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:33:59,430 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:33:59,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:33:59,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:33:59,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:33:59,433 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-31 17:33:59,583 WARN L181 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2019-01-31 17:37:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:37:18,441 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-31 17:37:18,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-31 17:37:18,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-31 17:37:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:37:18,444 INFO L225 Difference]: With dead ends: 79 [2019-01-31 17:37:18,444 INFO L226 Difference]: Without dead ends: 77 [2019-01-31 17:37:18,446 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-31 17:37:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-31 17:37:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-31 17:37:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-31 17:37:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-31 17:37:18,453 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-31 17:37:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:37:18,453 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-31 17:37:18,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-31 17:37:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-31 17:37:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:37:18,454 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:37:18,454 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:37:18,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:37:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-31 17:37:18,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:37:18,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:18,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:18,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:37:18,457 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:37:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:18,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:18,545 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:37:18,545 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:37:18,546 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-31 17:37:18,548 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-31 17:37:18,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:37:18,984 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:37:18,985 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-31 17:37:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:37:18,985 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:37:18,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:37:18,985 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 [2019-01-31 17:37:18,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:37:19,000 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:37:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:37:19,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:37:19,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-31 17:37:19,096 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 [2019-01-31 17:37:19,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,106 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 [2019-01-31 17:37:19,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,119 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 [2019-01-31 17:37:19,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,133 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 [2019-01-31 17:37:19,174 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,188 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,190 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,195 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,196 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 [2019-01-31 17:37:19,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,241 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,243 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,247 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 [2019-01-31 17:37:19,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,274 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,286 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,288 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 [2019-01-31 17:37:19,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,300 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,301 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,302 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,304 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,307 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,310 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 [2019-01-31 17:37:19,339 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-31 17:37:19,341 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,464 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,575 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,658 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,717 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,795 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,831 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,864 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,890 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,916 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:19,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:19,986 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 146 treesize of output 140 [2019-01-31 17:37:20,047 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,048 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,050 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-31 17:37:20,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,119 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,123 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 106 treesize of output 123 [2019-01-31 17:37:20,255 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-01-31 17:37:20,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,262 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,263 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,264 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,264 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,267 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 122 [2019-01-31 17:37:20,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,373 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,373 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,375 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,376 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,377 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,379 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,381 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 130 [2019-01-31 17:37:20,496 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-31 17:37:20,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,501 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,504 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,506 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,509 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,513 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 61 treesize of output 145 [2019-01-31 17:37:20,657 WARN L181 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-31 17:37:20,662 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,664 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,671 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,674 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,676 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,678 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,680 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-31 17:37:20,873 WARN L181 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-31 17:37:20,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,886 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,887 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,888 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,888 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,890 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,892 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,893 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,894 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,895 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,897 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,898 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:20,900 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 145 [2019-01-31 17:37:20,902 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:20,990 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,075 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,164 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,256 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,348 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,439 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,530 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:37:21,702 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. [2019-01-31 17:37:21,703 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-31 17:37:21,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:37:21,877 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-31 17:37:21,878 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:37:22,074 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:37:22,074 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-31 17:37:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:22,111 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:37:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:37:22,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:37:22,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:37:22,149 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:37:22,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:37:22,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:37:22,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:37:22,151 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-31 17:37:48,005 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-01-31 17:37:48,009 INFO L168 Benchmark]: Toolchain (without parser) took 237043.27 ms. Allocated memory was 134.2 MB in the beginning and 308.8 MB in the end (delta: 174.6 MB). Free memory was 109.3 MB in the beginning and 265.9 MB in the end (delta: -156.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2019-01-31 17:37:48,010 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 17:37:48,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.31 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 106.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-01-31 17:37:48,011 INFO L168 Benchmark]: Boogie Preprocessor took 36.04 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 105.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-01-31 17:37:48,011 INFO L168 Benchmark]: RCFGBuilder took 626.34 ms. Allocated memory is still 134.2 MB. Free memory was 105.4 MB in the beginning and 91.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-01-31 17:37:48,012 INFO L168 Benchmark]: TraceAbstraction took 236302.52 ms. Allocated memory was 134.2 MB in the beginning and 308.8 MB in the end (delta: 174.6 MB). Free memory was 91.2 MB in the beginning and 265.9 MB in the end (delta: -174.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 17:37:48,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.31 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 106.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.04 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 105.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.34 ms. Allocated memory is still 134.2 MB. Free memory was 105.4 MB in the beginning and 91.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236302.52 ms. Allocated memory was 134.2 MB in the beginning and 308.8 MB in the end (delta: 174.6 MB). Free memory was 91.2 MB in the beginning and 265.9 MB in the end (delta: -174.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...