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_camel.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:23:57,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:23:57,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:23:57,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-03-04 16:23:57,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-03-04 16:23:57,197 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-03-04 16:23:57,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-03-04 16:23:57,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-03-04 16:23:57,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-03-04 16:23:57,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-03-04 16:23:57,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-03-04 16:23:57,240 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_camel.epf [2019-03-04 16:23:57,261 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:23:57,261 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:23:57,263 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:23:57,263 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:23:57,263 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:23:57,263 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:23:57,264 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:23:57,266 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:23:57,266 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:23:57,266 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:23:57,267 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-03-04 16:23:57,267 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:23:57,267 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:23:57,268 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:23:57,268 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:23:57,268 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:23:57,268 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:23:57,268 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:23:57,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:23:57,270 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:23:57,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:23:57,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:23:57,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:23:57,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:23:57,271 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:23:57,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:23:57,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:23:57,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:23:57,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:23:57,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:23:57,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:23:57,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:23:57,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:23:57,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:23:57,274 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-03-04 16:23:57,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:23:57,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:23:57,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:23:57,274 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:23:57,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:23:57,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:23:57,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:23:57,327 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:23:57,327 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:23:57,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-03-04 16:23:57,329 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-03-04 16:23:57,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:23:57,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:23:57,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:23:57,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:23:57,380 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:23:57,398 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,413 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:23:57,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:23:57,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:23:57,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:23:57,464 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,464 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,468 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,469 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,476 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,485 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,487 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 04.03 04:23:57" (1/1) ... [2019-03-04 16:23:57,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:23:57,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:23:57,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:23:57,494 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:23:57,499 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 04.03 04:23:57" (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 [2019-03-04 16:23:57,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:23:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:23:58,065 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:23:58,066 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-03-04 16:23:58,067 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:23:58 BoogieIcfgContainer [2019-03-04 16:23:58,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:23:58,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:23:58,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:23:58,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:23:58,072 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 04.03 04:23:57" (1/2) ... [2019-03-04 16:23:58,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a1f107 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:23:58, skipping insertion in model container [2019-03-04 16:23:58,073 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 04.03 04:23:58" (2/2) ... [2019-03-04 16:23:58,075 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-03-04 16:23:58,084 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:23:58,096 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-03-04 16:23:58,113 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-03-04 16:23:58,148 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-03-04 16:23:58,149 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:23:58,149 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:23:58,149 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:23:58,149 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:23:58,150 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:23:58,150 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:23:58,150 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:23:58,150 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:23:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-03-04 16:23:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:23:58,189 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:23:58,190 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:23:58,193 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:23:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:23:58,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-03-04 16:23:58,203 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:23:58,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:23:58,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:58,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:58,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:58,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:23:58,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:23:58,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:23:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:23:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:23:58,444 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-03-04 16:23:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:23:58,718 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-03-04 16:23:58,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:23:58,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:23:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:23:58,735 INFO L225 Difference]: With dead ends: 45 [2019-03-04 16:23:58,747 INFO L226 Difference]: Without dead ends: 40 [2019-03-04 16:23:58,753 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 [2019-03-04 16:23:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-03-04 16:23:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-03-04 16:23:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-03-04 16:23:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-03-04 16:23:58,791 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-03-04 16:23:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:23:58,792 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-03-04 16:23:58,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:23:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-03-04 16:23:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:23:58,793 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:23:58,794 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:23:58,794 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:23:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:23:58,795 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-03-04 16:23:58,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:23:58,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:23:58,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:58,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:58,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:59,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:23:59,014 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-03-04 16:23:59,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:59,066 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-03-04 16:23:59,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:23:59,141 INFO L453 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 [2019-03-04 16:23:59,190 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,192 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-03-04 16:23:59,245 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,260 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,270 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,273 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2019-03-04 16:23:59,327 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,351 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,363 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,372 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,380 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,388 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,391 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2019-03-04 16:23:59,405 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,415 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,419 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,425 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,429 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,431 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,433 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,435 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,447 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,449 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2019-03-04 16:23:59,472 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,474 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,476 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,479 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,481 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,483 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,485 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,486 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,488 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,490 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,492 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,495 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,496 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,498 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,500 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,504 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-03-04 16:23:59,532 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,533 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,535 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,537 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,539 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,559 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,581 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,603 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,628 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,652 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,676 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,700 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,722 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,748 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,770 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,782 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,805 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,831 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,854 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,880 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,900 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,901 INFO L301 Elim1Store]: Index analysis took 370 ms [2019-03-04 16:23:59,904 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-03-04 16:23:59,946 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,948 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,950 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,953 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,956 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,959 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,962 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,963 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,969 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,970 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,972 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,973 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,975 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,977 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:23:59,999 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,024 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,032 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,033 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,034 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,036 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,037 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,039 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,041 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,045 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,050 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,052 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,053 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,054 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,054 INFO L301 Elim1Store]: Index analysis took 110 ms [2019-03-04 16:24:00,058 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 50 [2019-03-04 16:24:00,073 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,076 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,078 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,081 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,083 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,085 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,087 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,089 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,091 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,093 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,095 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,097 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,099 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,101 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,103 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,105 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,107 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,109 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,111 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,113 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,115 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,117 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,119 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,121 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,123 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,126 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,128 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,130 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,132 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,134 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,136 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,138 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,140 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,142 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,146 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,149 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,153 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2019-03-04 16:24:00,179 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,181 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,189 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,193 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,197 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,199 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,201 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,207 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,209 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,213 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,215 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,217 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,219 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,221 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,227 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,229 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,231 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,233 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,235 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,259 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,261 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,264 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,266 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,269 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,271 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,273 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,287 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,312 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,337 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,358 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,383 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,412 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,434 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,459 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,484 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:24:00,485 INFO L301 Elim1Store]: Index analysis took 312 ms [2019-03-04 16:24:00,782 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-03-04 16:24:00,786 INFO L309 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:00,834 INFO L309 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:00,889 INFO L309 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:00,925 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:00,957 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,003 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,031 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,057 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,093 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,126 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,438 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-03-04 16:24:01,439 INFO L309 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,450 INFO L309 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,459 INFO L309 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,476 INFO L309 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,525 INFO L309 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,625 INFO L309 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,741 INFO L309 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,820 INFO L309 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:01,986 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:24:02,149 INFO L309 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. [2019-03-04 16:24:02,150 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-03-04 16:24:02,321 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-03-04 16:24:02,322 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:24:02,648 INFO L309 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. [2019-03-04 16:24:02,648 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-03-04 16:24:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:24:02,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:24:02,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-03-04 16:24:02,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:24:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:24:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:24:02,720 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-03-04 16:24:02,964 WARN L181 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2019-03-04 16:24:25,001 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:24:25,003 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 [2019-03-04 16:24:25,007 INFO L168 Benchmark]: Toolchain (without parser) took 27629.21 ms. Allocated memory was 139.5 MB in the beginning and 242.2 MB in the end (delta: 102.8 MB). Free memory was 106.8 MB in the beginning and 120.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2019-03-04 16:24:25,008 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory is still 108.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:24:25,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.95 ms. Allocated memory is still 139.5 MB. Free memory was 106.8 MB in the beginning and 104.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-03-04 16:24:25,010 INFO L168 Benchmark]: Boogie Preprocessor took 41.39 ms. Allocated memory is still 139.5 MB. Free memory was 104.4 MB in the beginning and 102.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:24:25,011 INFO L168 Benchmark]: RCFGBuilder took 573.53 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 88.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:24:25,012 INFO L168 Benchmark]: TraceAbstraction took 26937.89 ms. Allocated memory was 139.5 MB in the beginning and 242.2 MB in the end (delta: 102.8 MB). Free memory was 88.4 MB in the beginning and 120.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:24:25,019 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 0.24 ms. Allocated memory is still 139.5 MB. Free memory is still 108.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.95 ms. Allocated memory is still 139.5 MB. Free memory was 106.8 MB in the beginning and 104.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.39 ms. Allocated memory is still 139.5 MB. Free memory was 104.4 MB in the beginning and 102.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.53 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 88.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26937.89 ms. Allocated memory was 139.5 MB in the beginning and 242.2 MB in the end (delta: 102.8 MB). Free memory was 88.4 MB in the beginning and 120.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory: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...