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-b7bd044-m [2019-01-18 17:29:26,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 17:29:26,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 17:29:26,698 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-18 17:29:26,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-18 17:29:26,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-18 17:29:26,700 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-18 17:29:26,702 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-18 17:29:26,704 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-18 17:29:26,705 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-18 17:29:26,706 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-18 17:29:26,727 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 [2019-01-18 17:29:26,749 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 17:29:26,749 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 17:29:26,752 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 17:29:26,752 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 17:29:26,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 17:29:26,752 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 17:29:26,753 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 17:29:26,755 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 17:29:26,755 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-18 17:29:26,755 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 17:29:26,755 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-18 17:29:26,756 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-18 17:29:26,756 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 17:29:26,756 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 17:29:26,757 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 17:29:26,757 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 17:29:26,757 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 17:29:26,757 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 17:29:26,758 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 17:29:26,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 17:29:26,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 17:29:26,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 17:29:26,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 17:29:26,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 17:29:26,761 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 17:29:26,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 17:29:26,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 17:29:26,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 17:29:26,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 17:29:26,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 17:29:26,762 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 17:29:26,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 17:29:26,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 17:29:26,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 17:29:26,763 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 17:29:26,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 17:29:26,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 17:29:26,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 17:29:26,834 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 17:29:26,835 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 17:29:26,835 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl [2019-01-18 17:29:26,836 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl' [2019-01-18 17:29:26,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 17:29:26,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 17:29:26,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 17:29:26,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 17:29:26,880 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 17:29:26,896 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,908 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 17:29:26,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 17:29:26,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 17:29:26,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 17:29:26,949 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,949 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,952 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,952 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,957 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,960 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,962 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 18.01 05:29:26" (1/1) ... [2019-01-18 17:29:26,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 17:29:26,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 17:29:26,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 17:29:26,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 17:29:26,966 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 18.01 05:29:26" (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:2024 -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:2024 -smt2 -in -t:2000 [2019-01-18 17:29:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-18 17:29:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-18 17:29:27,654 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-18 17:29:27,654 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-18 17:29:27,656 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:29:27 BoogieIcfgContainer [2019-01-18 17:29:27,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 17:29:27,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-18 17:29:27,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-18 17:29:27,660 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-18 17:29:27,660 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 18.01 05:29:26" (1/2) ... [2019-01-18 17:29:27,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732985a and model type speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:29:27, skipping insertion in model container [2019-01-18 17:29:27,662 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 18.01 05:29:27" (2/2) ... [2019-01-18 17:29:27,663 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-limited.bpl [2019-01-18 17:29:27,673 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-18 17:29:27,682 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-18 17:29:27,699 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-18 17:29:27,733 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-18 17:29:27,733 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-18 17:29:27,734 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-18 17:29:27,734 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-18 17:29:27,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-18 17:29:27,734 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-18 17:29:27,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-18 17:29:27,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-18 17:29:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-18 17:29:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-18 17:29:27,767 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:29:27,768 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-18 17:29:27,772 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:29:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:29:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-18 17:29:27,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:29:27,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:29:27,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:29:27,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:29:27,829 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:29:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:29:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:29:27,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-18 17:29:27,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-18 17:29:27,992 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 17:29:27,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-18 17:29:28,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-18 17:29:28,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 17:29:28,009 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-18 17:29:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:29:28,359 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-18 17:29:28,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-18 17:29:28,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-18 17:29:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:29:28,377 INFO L225 Difference]: With dead ends: 45 [2019-01-18 17:29:28,377 INFO L226 Difference]: Without dead ends: 40 [2019-01-18 17:29:28,380 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 [2019-01-18 17:29:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-18 17:29:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-18 17:29:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-18 17:29:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-18 17:29:28,429 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-18 17:29:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:29:28,430 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-18 17:29:28,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-18 17:29:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-18 17:29:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 17:29:28,431 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:29:28,431 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 17:29:28,432 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:29:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:29:28,433 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-18 17:29:28,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:29:28,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:29:28,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:29:28,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:29:28,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:29:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:29:28,677 WARN L181 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-18 17:29:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:29:28,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:29:28,685 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 17:29:28,686 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-18 17:29:28,688 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-18 17:29:28,722 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-18 17:29:28,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 17:29:28,801 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 17:29:28,803 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. [2019-01-18 17:29:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:29:28,810 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 17:29:28,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:29:28,810 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 [2019-01-18 17:29:28,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:29:28,829 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 17:29:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:29:28,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 17:29:29,515 WARN L181 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-18 17:29:29,546 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 [2019-01-18 17:29:29,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,576 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 [2019-01-18 17:29:29,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,599 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,601 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 [2019-01-18 17:29:29,615 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,618 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,622 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,625 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 [2019-01-18 17:29:29,645 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,648 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,650 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,652 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,655 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 [2019-01-18 17:29:29,707 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,725 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,727 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,733 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,735 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 [2019-01-18 17:29:29,756 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,758 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,780 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,785 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 [2019-01-18 17:29:29,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,808 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,816 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,822 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 [2019-01-18 17:29:29,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,847 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,857 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,860 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 [2019-01-18 17:29:29,912 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,933 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,961 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:29,982 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:30,009 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:30,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:30,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:30,023 INFO L303 Elim1Store]: Index analysis took 153 ms [2019-01-18 17:29:30,026 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 [2019-01-18 17:29:30,029 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-18 17:29:30,777 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:30,967 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,056 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,142 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,196 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,264 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,303 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,338 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,370 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:31,529 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,545 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,547 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 [2019-01-18 17:29:31,562 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 [2019-01-18 17:29:31,645 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,690 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,734 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:31,734 INFO L303 Elim1Store]: Index analysis took 120 ms [2019-01-18 17:29:31,736 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 [2019-01-18 17:29:31,762 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 [2019-01-18 17:29:31,987 WARN L181 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-01-18 17:29:32,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,006 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,007 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,009 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,033 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 [2019-01-18 17:29:32,160 WARN L181 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-18 17:29:32,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,187 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,188 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,189 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,193 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,195 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,196 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,202 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 [2019-01-18 17:29:32,225 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 [2019-01-18 17:29:32,421 WARN L181 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-18 17:29:32,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,432 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,438 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,440 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,442 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,443 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,445 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 [2019-01-18 17:29:32,446 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,453 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,463 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,465 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,468 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,471 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,474 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,476 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:29:32,546 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. [2019-01-18 17:29:32,546 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-18 17:29:32,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,675 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,676 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,686 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,699 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,700 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,704 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,706 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,708 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,709 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,710 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,713 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,716 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,721 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,724 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,727 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,728 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,731 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,732 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,733 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,735 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,739 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,741 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,743 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,745 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,747 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,748 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:29:32,751 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 [2019-01-18 17:29:32,753 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-18 17:29:33,157 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. [2019-01-18 17:29:33,157 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-18 17:29:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:29:36,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 17:29:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:29:36,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 17:29:36,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-18 17:29:36,055 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 17:29:36,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-18 17:29:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-18 17:29:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-18 17:29:36,139 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-18 17:29:57,533 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-18 17:29:57,535 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:2024 -smt2 -in -t:2000) 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 [2019-01-18 17:29:57,538 INFO L168 Benchmark]: Toolchain (without parser) took 30660.01 ms. Allocated memory was 142.1 MB in the beginning and 281.0 MB in the end (delta: 138.9 MB). Free memory was 109.4 MB in the beginning and 241.3 MB in the end (delta: -131.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2019-01-18 17:29:57,547 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:29:57,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.38 ms. Allocated memory is still 142.1 MB. Free memory was 109.4 MB in the beginning and 107.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-01-18 17:29:57,548 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 142.1 MB. Free memory was 106.8 MB in the beginning and 105.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-01-18 17:29:57,550 INFO L168 Benchmark]: RCFGBuilder took 691.16 ms. Allocated memory is still 142.1 MB. Free memory was 105.5 MB in the beginning and 90.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-01-18 17:29:57,551 INFO L168 Benchmark]: TraceAbstraction took 29880.72 ms. Allocated memory was 142.1 MB in the beginning and 281.0 MB in the end (delta: 138.9 MB). Free memory was 90.7 MB in the beginning and 241.3 MB in the end (delta: -150.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:29:57,561 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 0.16 ms. Allocated memory is still 142.1 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.38 ms. Allocated memory is still 142.1 MB. Free memory was 109.4 MB in the beginning and 107.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.87 ms. Allocated memory is still 142.1 MB. Free memory was 106.8 MB in the beginning and 105.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.16 ms. Allocated memory is still 142.1 MB. Free memory was 105.5 MB in the beginning and 90.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29880.72 ms. Allocated memory was 142.1 MB in the beginning and 281.0 MB in the end (delta: 138.9 MB). Free memory was 90.7 MB in the beginning and 241.3 MB in the end (delta: -150.6 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:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) 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...