java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:56:30,228 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:56:30,231 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:56:30,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-03-04 16:56:30,244 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-03-04 16:56:30,245 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-03-04 16:56:30,246 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-03-04 16:56:30,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-03-04 16:56:30,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-03-04 16:56:30,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-03-04 16:56:30,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-03-04 16:56:30,254 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-03-04 16:56:30,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-03-04 16:56:30,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-03-04 16:56:30,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-03-04 16:56:30,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-03-04 16:56:30,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-03-04 16:56:30,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-03-04 16:56:30,264 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-03-04 16:56:30,266 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-03-04 16:56:30,267 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-03-04 16:56:30,268 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-03-04 16:56:30,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-03-04 16:56:30,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-03-04 16:56:30,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-03-04 16:56:30,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-03-04 16:56:30,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-03-04 16:56:30,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-03-04 16:56:30,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-03-04 16:56:30,276 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-03-04 16:56:30,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-03-04 16:56:30,277 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-03-04 16:56:30,277 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-03-04 16:56:30,277 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-03-04 16:56:30,278 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-03-04 16:56:30,279 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-03-04 16:56:30,279 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-03-04 16:56:30,295 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:56:30,296 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:56:30,296 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:56:30,297 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:56:30,297 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:56:30,297 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:56:30,297 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:56:30,297 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:56:30,298 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:56:30,298 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:56:30,298 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-03-04 16:56:30,298 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:56:30,298 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:56:30,299 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:56:30,299 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:56:30,299 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:56:30,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:56:30,300 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:56:30,300 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:56:30,300 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:56:30,300 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:56:30,301 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:56:30,301 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:56:30,301 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:56:30,301 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:56:30,301 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:56:30,302 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:56:30,302 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:56:30,302 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:56:30,302 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:56:30,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:56:30,303 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:56:30,303 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:56:30,303 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:56:30,303 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-03-04 16:56:30,303 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:56:30,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:56:30,304 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:56:30,304 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:56:30,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:56:30,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:56:30,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:56:30,372 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:56:30,373 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:56:30,374 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-03-04 16:56:30,374 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-03-04 16:56:30,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:56:30,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:56:30,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:56:30,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:56:30,425 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:56:30,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:56:30,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:56:30,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:56:30,486 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:56:30,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/1) ... [2019-03-04 16:56:30,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:56:30,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:56:30,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:56:30,526 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:56:30,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (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 16:56:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:56:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:56:31,151 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:56:31,152 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-03-04 16:56:31,153 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:56:31 BoogieIcfgContainer [2019-03-04 16:56:31,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:56:31,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:56:31,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:56:31,158 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:56:31,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:56:30" (1/2) ... [2019-03-04 16:56:31,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d658fc and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:56:31, skipping insertion in model container [2019-03-04 16:56:31,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:56:31" (2/2) ... [2019-03-04 16:56:31,162 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-03-04 16:56:31,171 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:56:31,180 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-03-04 16:56:31,193 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-03-04 16:56:31,224 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:56:31,225 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:56:31,225 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:56:31,225 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:56:31,225 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:56:31,226 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:56:31,226 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:56:31,226 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:56:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-03-04 16:56:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:56:31,246 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:56:31,247 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:56:31,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:56:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:56:31,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-03-04 16:56:31,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:56:31,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:31,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:56:31,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:31,304 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:56:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:56:31,494 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 16:56:31,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:56:31,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:56:31,497 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:56:31,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:56:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:56:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:56:31,519 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-03-04 16:56:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:56:31,779 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-03-04 16:56:31,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:56:31,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:56:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:56:31,796 INFO L225 Difference]: With dead ends: 41 [2019-03-04 16:56:31,797 INFO L226 Difference]: Without dead ends: 36 [2019-03-04 16:56:31,800 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 16:56:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-03-04 16:56:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-03-04 16:56:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-03-04 16:56:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-03-04 16:56:31,855 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-03-04 16:56:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:56:31,857 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-03-04 16:56:31,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:56:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-03-04 16:56:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:56:31,858 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:56:31,858 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:56:31,858 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:56:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:56:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-03-04 16:56:31,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:56:31,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:31,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:56:31,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:31,860 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:56:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:56:32,001 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 16:56:32,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:56:32,002 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:56:32,002 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:56:32,004 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-03-04 16:56:32,057 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-03-04 16:56:32,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:56:33,182 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-03-04 16:56:33,184 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-03-04 16:56:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:56:33,196 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-03-04 16:56:33,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:56:33,196 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 [2019-03-04 16:56:33,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:56:33,212 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-03-04 16:56:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:56:33,248 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-03-04 16:56:33,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:56:33,343 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 30 treesize of output 33 [2019-03-04 16:56:33,399 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,401 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 33 treesize of output 35 [2019-03-04 16:56:33,457 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,477 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,503 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,505 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 35 treesize of output 37 [2019-03-04 16:56:33,560 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,562 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,566 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,567 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,592 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,598 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,601 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 37 treesize of output 39 [2019-03-04 16:56:33,654 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,670 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,678 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,680 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,708 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,731 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,756 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,782 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,807 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,833 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,834 INFO L301 Elim1Store]: Index analysis took 191 ms [2019-03-04 16:56:33,836 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 39 treesize of output 41 [2019-03-04 16:56:33,891 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,909 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,936 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,959 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,984 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:33,993 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,016 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,027 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,029 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,035 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,036 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,037 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,038 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,041 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,043 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,044 INFO L301 Elim1Store]: Index analysis took 177 ms [2019-03-04 16:56:34,047 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 41 treesize of output 43 [2019-03-04 16:56:34,065 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,066 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,068 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,070 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,072 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,076 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,078 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,080 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,082 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,086 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,087 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,088 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,091 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,093 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,095 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,097 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,102 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,107 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,108 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,109 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,110 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,113 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 43 treesize of output 45 [2019-03-04 16:56:34,179 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,202 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,221 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,222 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,223 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,224 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,226 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,228 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,231 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,233 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,235 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,236 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,255 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,257 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,258 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,259 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,260 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,261 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,263 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,264 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,266 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,267 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,269 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,271 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,274 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,300 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,323 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,344 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,345 INFO L301 Elim1Store]: Index analysis took 189 ms [2019-03-04 16:56:34,347 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 45 treesize of output 47 [2019-03-04 16:56:34,402 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,425 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,437 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,439 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,443 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,444 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,445 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,447 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,448 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,450 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,451 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,453 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,455 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,456 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,458 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,459 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,461 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,462 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,464 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,465 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,467 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,469 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,470 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,472 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,473 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,475 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,477 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:34,479 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:56:35,118 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 70 [2019-03-04 16:56:35,120 INFO L309 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,280 INFO L309 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,348 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,379 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,406 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,431 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,476 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,503 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,538 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,711 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-03-04 16:56:35,712 INFO L309 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,725 INFO L309 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,767 INFO L309 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,829 INFO L309 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,912 INFO L309 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:35,979 INFO L309 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:36,074 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:36,173 INFO L309 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:36,286 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:56:36,287 INFO L209 ElimStorePlain]: Needed 18 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-03-04 16:56:36,543 WARN L181 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-03-04 16:56:36,587 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-03-04 16:56:36,588 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:36,775 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:56:36,776 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:127 [2019-03-04 16:56:36,799 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 16:56:36,799 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-03-04 16:56:36,812 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 16:56:36,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-03-04 16:56:36,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-03-04 16:56:36,836 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-03-04 16:56:36,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:56:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:56:36,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:56:36,837 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-03-04 16:56:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:56:49,326 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-03-04 16:56:49,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-03-04 16:56:49,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:56:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:56:49,329 INFO L225 Difference]: With dead ends: 71 [2019-03-04 16:56:49,329 INFO L226 Difference]: Without dead ends: 69 [2019-03-04 16:56:49,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-03-04 16:56:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-03-04 16:56:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-03-04 16:56:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-03-04 16:56:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-03-04 16:56:49,337 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-03-04 16:56:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:56:49,337 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-03-04 16:56:49,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:56:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-03-04 16:56:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:56:49,338 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:56:49,338 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:56:49,339 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:56:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:56:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-03-04 16:56:49,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:56:49,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:49,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:56:49,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:56:49,341 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:56:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:56:49,502 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 16:56:49,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:56:49,503 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:56:49,503 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:56:49,503 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-03-04 16:56:49,512 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-03-04 16:56:49,512 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:56:49,912 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-03-04 16:56:49,912 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-03-04 16:56:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:56:49,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-03-04 16:56:49,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:56:49,913 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:56:49,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:56:49,927 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-03-04 16:56:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:56:49,949 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-03-04 16:56:49,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:56:50,092 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-03-04 16:56:50,093 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,186 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,209 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,221 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,285 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,359 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,418 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,508 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,589 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-03-04 16:56:50,619 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2019-03-04 16:56:50,623 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2019-03-04 16:56:50,634 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2019-03-04 16:56:50,639 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 25 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-03-04 16:56:50,648 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 27 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2019-03-04 16:56:50,659 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2019-03-04 16:56:50,666 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 45 treesize of output 47 [2019-03-04 16:56:50,739 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 70 [2019-03-04 16:56:50,741 INFO L309 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,759 INFO L309 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,779 INFO L309 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,799 INFO L309 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,819 INFO L309 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,839 INFO L309 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,859 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,878 INFO L309 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:50,898 INFO L309 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:56:51,002 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:56:51,002 INFO L209 ElimStorePlain]: Needed 18 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-03-04 16:56:51,134 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-03-04 16:56:51,187 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-03-04 16:56:51,188 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:56:51,285 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:56:51,286 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:127 [2019-03-04 16:56:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:56:51,316 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-03-04 16:56:51,328 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 16:56:51,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-03-04 16:56:51,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-03-04 16:56:51,347 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-03-04 16:56:51,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:56:51,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:56:51,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:56:51,348 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-03-04 16:57:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:57:02,912 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-03-04 16:57:02,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-03-04 16:57:02,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-03-04 16:57:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:57:02,914 INFO L225 Difference]: With dead ends: 54 [2019-03-04 16:57:02,914 INFO L226 Difference]: Without dead ends: 52 [2019-03-04 16:57:02,915 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:57:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-03-04 16:57:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2019-03-04 16:57:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-03-04 16:57:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-03-04 16:57:02,922 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-03-04 16:57:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:57:02,922 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-03-04 16:57:02,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:57:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-03-04 16:57:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:57:02,923 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:57:02,923 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:57:02,923 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:57:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:57:02,924 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-03-04 16:57:02,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:57:02,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:57:02,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:57:02,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:57:02,925 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:57:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:57:03,031 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 16:57:03,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:57:03,031 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:57:03,032 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:57:03,032 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-03-04 16:57:03,034 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-03-04 16:57:03,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:57:05,907 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-03-04 16:57:05,908 INFO L272 AbstractInterpreter]: Visited 3 different actions 11 times. Merged at 1 different actions 4 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 0 variables. [2019-03-04 16:57:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:57:05,909 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-03-04 16:57:05,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:57:05,909 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:57:05,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:57:05,926 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-03-04 16:57:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:57:05,942 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-03-04 16:57:05,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:57:05,953 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 30 treesize of output 33 [2019-03-04 16:57:05,964 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,965 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 33 treesize of output 35 [2019-03-04 16:57:05,973 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,975 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,980 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,981 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 35 treesize of output 37 [2019-03-04 16:57:05,989 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,991 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,993 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,995 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,997 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:05,999 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,000 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 37 treesize of output 39 [2019-03-04 16:57:06,032 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,034 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,036 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,038 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,046 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,048 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,050 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,053 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,055 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,058 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,059 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 39 treesize of output 41 [2019-03-04 16:57:06,066 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,068 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,069 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,070 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,072 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,073 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,075 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,076 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,078 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,079 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,080 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,082 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,083 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,085 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,086 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,088 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 41 treesize of output 43 [2019-03-04 16:57:06,094 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,094 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,095 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,096 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,098 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,099 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,101 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,102 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,107 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,108 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,109 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,110 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,111 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,112 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,114 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,115 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,116 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,118 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,119 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,121 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,122 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,124 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 43 treesize of output 45 [2019-03-04 16:57:06,132 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,133 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,133 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,135 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,136 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,137 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,139 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,140 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,142 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,143 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,145 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,146 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,148 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,149 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,150 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,152 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,153 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,155 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,156 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,158 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,159 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,160 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,162 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,163 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,165 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,166 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,168 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,169 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,171 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 45 treesize of output 47 [2019-03-04 16:57:06,177 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,178 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,179 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,180 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,182 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,185 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,186 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,187 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,189 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,190 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,192 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,193 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,195 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,196 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,198 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,199 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,201 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,202 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,203 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,205 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,206 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,208 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,209 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,211 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,212 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,213 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,215 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:57:06,280 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 70 [2019-03-04 16:57:06,282 INFO L309 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,303 INFO L309 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,324 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,348 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,367 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,389 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,413 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,432 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,456 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,593 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2019-03-04 16:57:06,594 INFO L309 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,600 INFO L309 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,613 INFO L309 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,635 INFO L309 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,671 INFO L309 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,726 INFO L309 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,790 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,856 INFO L309 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:57:06,960 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:57:06,961 INFO L209 ElimStorePlain]: Needed 18 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-03-04 16:57:08,526 WARN L181 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 88 [2019-03-04 16:57:08,618 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 56 treesize of output 107 [2019-03-04 16:57:08,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-03-04 16:57:08,706 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2019-03-04 16:57:11,520 INFO L309 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 64 dim-0 vars, and 9 xjuncts. [2019-03-04 16:57:11,521 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1383 [2019-03-04 16:57:23,860 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:57:24,071 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:57:24,073 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)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:152) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:581) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2019-03-04 16:57:24,078 INFO L168 Benchmark]: Toolchain (without parser) took 53655.28 ms. Allocated memory was 141.0 MB in the beginning and 505.9 MB in the end (delta: 364.9 MB). Free memory was 108.5 MB in the beginning and 473.8 MB in the end (delta: -365.3 MB). Peak memory consumption was 362.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:57:24,080 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:57:24,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.02 ms. Allocated memory is still 141.0 MB. Free memory was 108.3 MB in the beginning and 106.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:57:24,081 INFO L168 Benchmark]: Boogie Preprocessor took 40.13 ms. Allocated memory is still 141.0 MB. Free memory was 106.0 MB in the beginning and 104.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:57:24,082 INFO L168 Benchmark]: RCFGBuilder took 627.71 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 91.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:57:24,083 INFO L168 Benchmark]: TraceAbstraction took 52922.47 ms. Allocated memory was 141.0 MB in the beginning and 505.9 MB in the end (delta: 364.9 MB). Free memory was 90.8 MB in the beginning and 473.8 MB in the end (delta: -383.0 MB). Peak memory consumption was 344.8 MB. Max. memory is 7.1 GB. [2019-03-04 16:57:24,087 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 0.20 ms. Allocated memory is still 141.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.02 ms. Allocated memory is still 141.0 MB. Free memory was 108.3 MB in the beginning and 106.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.13 ms. Allocated memory is still 141.0 MB. Free memory was 106.0 MB in the beginning and 104.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 627.71 ms. Allocated memory is still 141.0 MB. Free memory was 104.5 MB in the beginning and 91.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52922.47 ms. Allocated memory was 141.0 MB in the beginning and 505.9 MB in the end (delta: 364.9 MB). Free memory was 90.8 MB in the beginning and 473.8 MB in the end (delta: -383.0 MB). Peak memory consumption was 344.8 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)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...