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-e1a14da [2018-12-24 14:31:22,053 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-24 14:31:22,055 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-24 14:31:22,068 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-24 14:31:22,105 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 [2018-12-24 14:31:22,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-24 14:31:22,128 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-24 14:31:22,130 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-24 14:31:22,130 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-24 14:31:22,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-24 14:31:22,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-24 14:31:22,130 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-24 14:31:22,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-24 14:31:22,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-24 14:31:22,131 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-24 14:31:22,131 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-24 14:31:22,132 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-24 14:31:22,134 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-24 14:31:22,135 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-24 14:31:22,136 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-24 14:31:22,136 INFO L133 SettingsManager]: * Use SBE=true [2018-12-24 14:31:22,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-24 14:31:22,136 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-24 14:31:22,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-24 14:31:22,137 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-24 14:31:22,138 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-24 14:31:22,138 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-24 14:31:22,138 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-24 14:31:22,138 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-24 14:31:22,138 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-24 14:31:22,139 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-24 14:31:22,139 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-24 14:31:22,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-24 14:31:22,139 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-24 14:31:22,139 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-24 14:31:22,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-24 14:31:22,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-24 14:31:22,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-24 14:31:22,140 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-24 14:31:22,140 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-24 14:31:22,141 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-24 14:31:22,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-24 14:31:22,141 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-24 14:31:22,141 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-24 14:31:22,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-24 14:31:22,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-24 14:31:22,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-24 14:31:22,211 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-24 14:31:22,211 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-24 14:31:22,213 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2018-12-24 14:31:22,213 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2018-12-24 14:31:22,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-24 14:31:22,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-24 14:31:22,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-24 14:31:22,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-24 14:31:22,275 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-24 14:31:22,295 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,310 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-24 14:31:22,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-24 14:31:22,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-24 14:31:22,352 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-24 14:31:22,365 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,366 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,369 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,377 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,384 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,393 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,395 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 24.12 02:31:22" (1/1) ... [2018-12-24 14:31:22,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-24 14:31:22,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-24 14:31:22,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-24 14:31:22,402 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-24 14:31:22,403 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 24.12 02:31:22" (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 [2018-12-24 14:31:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-24 14:31:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-24 14:31:23,007 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-24 14:31:23,007 INFO L280 CfgBuilder]: Removed 21 assue(true) statements. [2018-12-24 14:31:23,008 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:31:23 BoogieIcfgContainer [2018-12-24 14:31:23,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-24 14:31:23,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-24 14:31:23,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-24 14:31:23,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-24 14:31:23,013 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 24.12 02:31:22" (1/2) ... [2018-12-24 14:31:23,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed53056 and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:31:23, skipping insertion in model container [2018-12-24 14:31:23,015 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 24.12 02:31:23" (2/2) ... [2018-12-24 14:31:23,017 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2018-12-24 14:31:23,027 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-24 14:31:23,036 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-24 14:31:23,054 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-24 14:31:23,089 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-24 14:31:23,089 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-24 14:31:23,089 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-24 14:31:23,089 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-24 14:31:23,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-24 14:31:23,090 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-24 14:31:23,090 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-24 14:31:23,090 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-24 14:31:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-24 14:31:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-24 14:31:23,112 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:31:23,113 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-24 14:31:23,116 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:31:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:23,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2018-12-24 14:31:23,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:31:23,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:23,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:23,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:23,171 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:31:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:23,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-24 14:31:23,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-24 14:31:23,359 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-24 14:31:23,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-24 14:31:23,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-24 14:31:23,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-24 14:31:23,381 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-12-24 14:31:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:31:23,632 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2018-12-24 14:31:23,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-24 14:31:23,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-24 14:31:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:31:23,649 INFO L225 Difference]: With dead ends: 41 [2018-12-24 14:31:23,649 INFO L226 Difference]: Without dead ends: 36 [2018-12-24 14:31:23,653 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 [2018-12-24 14:31:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-24 14:31:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2018-12-24 14:31:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-24 14:31:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2018-12-24 14:31:23,695 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2018-12-24 14:31:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:31:23,697 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2018-12-24 14:31:23,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-24 14:31:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2018-12-24 14:31:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:31:23,698 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:31:23,698 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:31:23,699 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:31:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:23,699 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2018-12-24 14:31:23,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:31:23,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:23,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:23,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:23,701 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:31:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:23,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:23,891 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:31:23,892 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:31:23,894 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2018-12-24 14:31:23,951 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-24 14:31:23,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:31:25,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:31:25,122 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. [2018-12-24 14:31:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:25,129 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:31:25,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:25,130 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 [2018-12-24 14:31:25,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:25,145 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:31:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:25,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:31:25,445 WARN L181 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-24 14:31:25,475 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2018-12-24 14:31:25,494 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2018-12-24 14:31:25,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,555 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,557 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2018-12-24 14:31:25,579 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,581 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,602 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,604 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2018-12-24 14:31:25,660 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,684 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,710 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,738 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,739 INFO L303 Elim1Store]: Index analysis took 129 ms [2018-12-24 14:31:25,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2018-12-24 14:31:25,785 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,817 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,839 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,865 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,877 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,878 INFO L303 Elim1Store]: Index analysis took 130 ms [2018-12-24 14:31:25,880 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2018-12-24 14:31:25,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,953 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,980 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:25,993 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,015 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,041 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,042 INFO L303 Elim1Store]: Index analysis took 152 ms [2018-12-24 14:31:26,045 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2018-12-24 14:31:26,082 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,104 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,129 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,155 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,171 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,194 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,219 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:26,220 INFO L303 Elim1Store]: Index analysis took 169 ms [2018-12-24 14:31:26,222 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2018-12-24 14:31:26,284 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2018-12-24 14:31:26,287 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:26,713 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,180 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,267 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,319 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,358 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,402 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,453 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,497 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:27,649 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,650 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2018-12-24 14:31:27,748 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,751 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,753 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2018-12-24 14:31:27,844 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,845 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,847 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,848 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,850 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2018-12-24 14:31:27,955 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-12-24 14:31:27,962 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,963 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,965 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,966 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,968 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,969 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:27,971 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2018-12-24 14:31:28,091 WARN L181 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-12-24 14:31:28,133 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,155 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,179 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,196 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,200 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,201 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,202 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,204 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,204 INFO L303 Elim1Store]: Index analysis took 110 ms [2018-12-24 14:31:28,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2018-12-24 14:31:28,344 WARN L181 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-12-24 14:31:28,350 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,351 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,352 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,353 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,354 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,356 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,357 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,358 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,360 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,361 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,365 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2018-12-24 14:31:28,606 WARN L181 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:31:28,623 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,625 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,627 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,629 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,631 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,631 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,632 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,633 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,634 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,635 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,636 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,637 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:28,640 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2018-12-24 14:31:28,642 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:28,738 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:28,803 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:28,870 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:28,946 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:29,026 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:29,105 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:29,220 INFO L267 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. [2018-12-24 14:31:29,221 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:31:29,374 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-12-24 14:31:29,422 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:29,424 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 153 [2018-12-24 14:31:29,425 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:29,660 INFO L267 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. [2018-12-24 14:31:29,660 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2018-12-24 14:31:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:29,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-24 14:31:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:29,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-24 14:31:29,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2018-12-24 14:31:29,771 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-24 14:31:29,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-24 14:31:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-24 14:31:29,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 14:31:29,773 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2018-12-24 14:31:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:31:41,936 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2018-12-24 14:31:41,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-24 14:31:41,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2018-12-24 14:31:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:31:41,938 INFO L225 Difference]: With dead ends: 71 [2018-12-24 14:31:41,939 INFO L226 Difference]: Without dead ends: 69 [2018-12-24 14:31:41,940 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 [2018-12-24 14:31:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-12-24 14:31:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2018-12-24 14:31:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-24 14:31:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2018-12-24 14:31:41,948 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2018-12-24 14:31:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:31:41,948 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2018-12-24 14:31:41,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-24 14:31:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2018-12-24 14:31:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:31:41,949 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:31:41,949 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:31:41,950 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:31:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2018-12-24 14:31:41,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:31:41,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:41,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:41,952 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:31:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:42,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:42,073 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:31:42,073 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:31:42,073 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2018-12-24 14:31:42,075 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-24 14:31:42,075 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:31:42,516 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:31:42,516 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. [2018-12-24 14:31:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:42,516 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:31:42,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:42,517 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 [2018-12-24 14:31:42,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:42,529 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:31:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:42,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:31:42,607 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,608 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2018-12-24 14:31:42,674 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,675 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,676 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2018-12-24 14:31:42,734 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,736 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,737 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,739 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,740 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2018-12-24 14:31:42,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,815 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,825 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,826 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,827 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,829 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,830 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2018-12-24 14:31:42,920 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,922 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,928 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,929 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,930 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,932 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:42,934 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2018-12-24 14:31:43,047 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-12-24 14:31:43,051 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,052 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,053 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,054 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,056 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,057 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,058 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,060 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,061 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,063 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,064 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2018-12-24 14:31:43,190 WARN L181 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:31:43,195 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,196 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,197 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,198 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,199 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,203 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,204 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,205 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,206 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,207 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,208 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,209 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:43,211 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2018-12-24 14:31:43,213 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,277 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,339 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,401 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,466 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,555 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,620 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,699 INFO L478 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 [2018-12-24 14:31:43,703 INFO L478 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 39 [2018-12-24 14:31:43,708 INFO L478 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 49 [2018-12-24 14:31:43,711 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 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 63 [2018-12-24 14:31:43,718 INFO L478 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 81 [2018-12-24 14:31:43,723 INFO L478 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 103 [2018-12-24 14:31:43,728 INFO L478 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 129 [2018-12-24 14:31:43,736 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2018-12-24 14:31:43,763 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2018-12-24 14:31:43,764 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,842 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,902 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,949 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:43,984 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,013 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,036 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,057 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,075 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,176 INFO L267 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. [2018-12-24 14:31:44,177 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:31:44,235 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:44,236 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 159 [2018-12-24 14:31:44,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:44,486 INFO L267 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. [2018-12-24 14:31:44,487 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2018-12-24 14:31:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:44,506 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-24 14:31:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:44,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-24 14:31:44,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2018-12-24 14:31:44,550 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-24 14:31:44,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-24 14:31:44,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-24 14:31:44,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 14:31:44,551 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2018-12-24 14:31:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:31:55,666 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2018-12-24 14:31:55,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-24 14:31:55,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2018-12-24 14:31:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:31:55,669 INFO L225 Difference]: With dead ends: 54 [2018-12-24 14:31:55,669 INFO L226 Difference]: Without dead ends: 52 [2018-12-24 14:31:55,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 14:31:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-24 14:31:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2018-12-24 14:31:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-24 14:31:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2018-12-24 14:31:55,677 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2018-12-24 14:31:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:31:55,677 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2018-12-24 14:31:55,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-24 14:31:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2018-12-24 14:31:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:31:55,678 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:31:55,678 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:31:55,678 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:31:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2018-12-24 14:31:55,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:31:55,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:55,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:55,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:31:55,680 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:31:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 14:31:55,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:55,878 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:31:55,878 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:31:55,879 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2018-12-24 14:31:55,881 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-24 14:31:55,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:31:59,205 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:31:59,206 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. [2018-12-24 14:31:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:31:59,207 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:31:59,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:31:59,208 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 [2018-12-24 14:31:59,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:31:59,222 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:31:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:31:59,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:31:59,310 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2018-12-24 14:31:59,313 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2018-12-24 14:31:59,320 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,322 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2018-12-24 14:31:59,346 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,354 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,359 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,360 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2018-12-24 14:31:59,365 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,366 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,368 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,371 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2018-12-24 14:31:59,376 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,377 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,379 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,381 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,383 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2018-12-24 14:31:59,394 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,396 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,397 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,398 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,400 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,402 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,405 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2018-12-24 14:31:59,416 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,417 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,418 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,419 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,420 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,421 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,440 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,442 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2018-12-24 14:31:59,463 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 158 [2018-12-24 14:31:59,464 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,572 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,637 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,687 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,723 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,755 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,780 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,804 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,823 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:31:59,878 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,879 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 114 [2018-12-24 14:31:59,940 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,941 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:31:59,943 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 104 [2018-12-24 14:32:00,014 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,015 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,016 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,017 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,019 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 103 [2018-12-24 14:32:00,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,087 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,088 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,091 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,092 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,093 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 105 [2018-12-24 14:32:00,173 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,175 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,176 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,177 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,179 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,180 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,181 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,183 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,184 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2018-12-24 14:32:00,288 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,289 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,290 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,292 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,293 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,294 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,295 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,296 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,297 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,299 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,300 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2018-12-24 14:32:00,421 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:32:00,425 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,426 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,427 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,429 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,430 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,431 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,432 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,433 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,434 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,436 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,438 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:00,439 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2018-12-24 14:32:00,440 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,497 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,554 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,613 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,671 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,729 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,790 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:32:00,891 INFO L267 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. [2018-12-24 14:32:00,891 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:32:02,709 WARN L181 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 88 [2018-12-24 14:32:02,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:32:02,822 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 16 case distinctions, treesize of input 56 treesize of output 190 [2018-12-24 14:32:02,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-12-24 14:32:02,970 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2018-12-24 14:32:07,052 INFO L267 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. [2018-12-24 14:32:07,053 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1247 [2018-12-24 14:32:17,583 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-24 14:32:17,785 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-24 14:32:17,786 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:575) 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:286) 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 [2018-12-24 14:32:17,791 INFO L168 Benchmark]: Toolchain (without parser) took 55518.57 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -194.6 MB). Peak memory consumption was 924.2 MB. Max. memory is 7.1 GB. [2018-12-24 14:32:17,792 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 14:32:17,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 14:32:17,793 INFO L168 Benchmark]: Boogie Preprocessor took 48.74 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 14:32:17,794 INFO L168 Benchmark]: RCFGBuilder took 607.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-24 14:32:17,794 INFO L168 Benchmark]: TraceAbstraction took 54781.75 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -215.8 MB). Peak memory consumption was 903.1 MB. Max. memory is 7.1 GB. [2018-12-24 14:32:17,798 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.74 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 607.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54781.75 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -215.8 MB). Peak memory consumption was 903.1 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...