java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-18 17:39:45,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 17:39:45,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 17:39:45,613 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-18 17:39:45,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-18 17:39:45,680 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 17:39:45,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 17:39:45,682 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 17:39:45,682 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 17:39:45,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 17:39:45,682 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 17:39:45,682 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 17:39:45,683 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 17:39:45,683 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-18 17:39:45,683 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 17:39:45,683 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-18 17:39:45,683 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-18 17:39:45,684 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 17:39:45,684 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 17:39:45,685 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 17:39:45,685 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 17:39:45,685 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 17:39:45,685 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 17:39:45,686 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 17:39:45,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 17:39:45,688 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 17:39:45,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 17:39:45,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 17:39:45,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 17:39:45,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 17:39:45,689 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 17:39:45,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 17:39:45,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 17:39:45,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 17:39:45,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 17:39:45,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 17:39:45,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 17:39:45,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 17:39:45,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 17:39:45,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 17:39:45,690 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 17:39:45,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 17:39:45,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 17:39:45,692 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 17:39:45,692 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 17:39:45,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 17:39:45,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 17:39:45,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 17:39:45,766 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 17:39:45,767 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 17:39:45,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2019-01-18 17:39:45,768 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2019-01-18 17:39:45,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 17:39:45,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 17:39:45,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 17:39:45,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 17:39:45,828 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 17:39:45,844 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,860 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 17:39:45,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 17:39:45,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 17:39:45,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 17:39:45,915 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,915 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,918 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,918 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,926 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,936 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,938 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 18.01 05:39:45" (1/1) ... [2019-01-18 17:39:45,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 17:39:45,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 17:39:45,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 17:39:45,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 17:39:45,950 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 18.01 05:39:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 17:39:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-18 17:39:46,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-18 17:39:46,478 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-18 17:39:46,478 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-18 17:39:46,480 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:39:46 BoogieIcfgContainer [2019-01-18 17:39:46,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 17:39:46,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-18 17:39:46,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-18 17:39:46,484 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-18 17:39:46,485 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 18.01 05:39:45" (1/2) ... [2019-01-18 17:39:46,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee22c7 and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:39:46, skipping insertion in model container [2019-01-18 17:39:46,486 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 18.01 05:39:46" (2/2) ... [2019-01-18 17:39:46,488 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2019-01-18 17:39:46,499 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-18 17:39:46,508 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-18 17:39:46,527 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-18 17:39:46,561 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-18 17:39:46,561 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-18 17:39:46,562 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-18 17:39:46,562 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-18 17:39:46,562 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-18 17:39:46,562 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-18 17:39:46,562 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-18 17:39:46,563 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-18 17:39:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-18 17:39:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-18 17:39:46,586 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:39:46,588 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-18 17:39:46,590 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:39:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:39:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-18 17:39:46,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:39:46,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:39:46,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:39:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:39:46,656 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:39:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:39:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:39:46,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-18 17:39:46,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-18 17:39:46,861 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 17:39:46,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-18 17:39:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-18 17:39:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 17:39:46,886 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-18 17:39:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:39:47,147 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-18 17:39:47,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-18 17:39:47,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-18 17:39:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:39:47,163 INFO L225 Difference]: With dead ends: 41 [2019-01-18 17:39:47,163 INFO L226 Difference]: Without dead ends: 36 [2019-01-18 17:39:47,166 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 17:39:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-18 17:39:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-18 17:39:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-18 17:39:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-18 17:39:47,199 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-18 17:39:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:39:47,200 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-18 17:39:47,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-18 17:39:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-18 17:39:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 17:39:47,201 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:39:47,201 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 17:39:47,215 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:39:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:39:47,216 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-18 17:39:47,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:39:47,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:39:47,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:39:47,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:39:47,218 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:39:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:39:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:39:47,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:39:47,425 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 17:39:47,429 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-18 17:39:47,431 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-18 17:39:47,474 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-18 17:39:47,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 17:39:47,563 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 17:39:47,564 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 94 root evaluator evaluations with a maximum evaluation depth of 2. Performed 94 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-18 17:39:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:39:47,574 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 17:39:47,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:39:47,575 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-18 17:39:47,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:39:47,593 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 17:39:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:39:47,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 17:39:47,898 WARN L181 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-01-18 17:39:47,921 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 [2019-01-18 17:39:47,940 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 [2019-01-18 17:39:47,960 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:47,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:47,973 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 [2019-01-18 17:39:48,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,021 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,042 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,044 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 [2019-01-18 17:39:48,091 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,168 INFO L303 Elim1Store]: Index analysis took 112 ms [2019-01-18 17:39:48,171 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 [2019-01-18 17:39:48,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,246 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,249 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,252 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,255 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,258 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 [2019-01-18 17:39:48,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,294 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,298 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 [2019-01-18 17:39:48,327 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,329 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,353 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,363 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,370 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,372 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:48,375 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 [2019-01-18 17:39:48,436 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 [2019-01-18 17:39:48,439 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-18 17:39:48,869 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,294 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,383 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,448 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,500 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,554 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,583 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,628 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:49,757 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,759 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 [2019-01-18 17:39:49,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,835 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,839 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 [2019-01-18 17:39:49,966 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,974 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:49,976 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 [2019-01-18 17:39:50,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,156 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,173 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,174 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,174 INFO L303 Elim1Store]: Index analysis took 104 ms [2019-01-18 17:39:50,176 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 [2019-01-18 17:39:50,290 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-18 17:39:50,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,314 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,316 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,317 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,318 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,324 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,325 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,327 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 [2019-01-18 17:39:50,453 WARN L181 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-18 17:39:50,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,488 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,492 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,492 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,493 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,494 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,496 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,497 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,499 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,502 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 [2019-01-18 17:39:50,748 WARN L181 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-18 17:39:50,791 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,795 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,797 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,799 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,799 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:50,810 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 [2019-01-18 17:39:50,811 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-18 17:39:50,906 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:50,964 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,025 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,138 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,210 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,279 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,388 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. [2019-01-18 17:39:51,389 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-18 17:39:51,639 WARN L181 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-01-18 17:39:51,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:39:51,698 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 [2019-01-18 17:39:51,699 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-18 17:39:51,930 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. [2019-01-18 17:39:51,930 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-18 17:39:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:39:51,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 17:39:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:39:52,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 17:39:52,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-18 17:39:52,003 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 17:39:52,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-18 17:39:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-18 17:39:52,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-18 17:39:52,004 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-18 17:40:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:40:04,048 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2019-01-18 17:40:04,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-18 17:40:04,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-18 17:40:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:40:04,051 INFO L225 Difference]: With dead ends: 71 [2019-01-18 17:40:04,051 INFO L226 Difference]: Without dead ends: 69 [2019-01-18 17:40:04,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-18 17:40:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-01-18 17:40:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2019-01-18 17:40:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-18 17:40:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2019-01-18 17:40:04,059 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2019-01-18 17:40:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:40:04,060 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2019-01-18 17:40:04,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-18 17:40:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2019-01-18 17:40:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 17:40:04,060 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:40:04,061 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 17:40:04,061 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:40:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:40:04,061 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-01-18 17:40:04,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:40:04,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:40:04,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:40:04,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:40:04,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:40:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:40:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:40:04,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:40:04,208 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 17:40:04,208 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-18 17:40:04,208 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2019-01-18 17:40:04,209 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-18 17:40:04,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 17:40:04,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 17:40:04,219 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 94 root evaluator evaluations with a maximum evaluation depth of 2. Performed 94 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-18 17:40:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:40:04,220 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 17:40:04,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:40:04,220 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-18 17:40:04,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:40:04,234 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 17:40:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:40:04,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 17:40:04,334 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,335 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 [2019-01-18 17:40:04,442 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-01-18 17:40:04,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,448 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,450 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 [2019-01-18 17:40:04,510 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,512 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,513 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,515 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,516 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 [2019-01-18 17:40:04,606 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,608 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,618 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,619 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,621 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 [2019-01-18 17:40:04,714 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,715 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,717 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,718 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,719 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,721 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,724 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,726 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 [2019-01-18 17:40:04,914 WARN L181 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-18 17:40:04,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,927 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,928 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:04,933 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 [2019-01-18 17:40:05,064 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-18 17:40:05,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,073 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,079 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,085 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:05,087 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 [2019-01-18 17:40:05,089 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,149 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,211 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,288 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,352 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,416 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,482 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:05,572 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 [2019-01-18 17:40:05,580 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 [2019-01-18 17:40:05,610 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 [2019-01-18 17:40:05,623 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 [2019-01-18 17:40:05,644 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 [2019-01-18 17:40:05,660 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 [2019-01-18 17:40:05,679 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 [2019-01-18 17:40:05,699 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 [2019-01-18 17:40:05,906 INFO L303 Elim1Store]: Index analysis took 203 ms [2019-01-18 17:40:05,908 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 [2019-01-18 17:40:05,910 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,140 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,205 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,253 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,291 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,322 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,347 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,369 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,388 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,494 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. [2019-01-18 17:40:06,495 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-18 17:40:06,563 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:06,564 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 [2019-01-18 17:40:06,566 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-18 17:40:06,808 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. [2019-01-18 17:40:06,808 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2019-01-18 17:40:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:40:06,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 17:40:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:40:06,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 17:40:06,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-18 17:40:06,871 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 17:40:06,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-18 17:40:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-18 17:40:06,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-18 17:40:06,872 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2019-01-18 17:40:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:40:17,978 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-01-18 17:40:17,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-18 17:40:17,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-18 17:40:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:40:17,980 INFO L225 Difference]: With dead ends: 54 [2019-01-18 17:40:17,980 INFO L226 Difference]: Without dead ends: 52 [2019-01-18 17:40:17,980 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 [2019-01-18 17:40:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-01-18 17:40:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2019-01-18 17:40:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-18 17:40:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2019-01-18 17:40:17,987 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2019-01-18 17:40:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:40:17,987 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2019-01-18 17:40:17,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-18 17:40:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2019-01-18 17:40:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 17:40:17,988 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:40:17,988 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 17:40:17,988 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:40:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:40:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2019-01-18 17:40:17,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:40:17,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:40:17,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:40:17,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:40:17,990 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:40:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:40:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:40:18,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:40:18,140 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 17:40:18,140 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-18 17:40:18,140 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2019-01-18 17:40:18,142 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-18 17:40:18,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 17:40:18,150 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 17:40:18,150 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 94 root evaluator evaluations with a maximum evaluation depth of 2. Performed 94 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-18 17:40:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:40:18,151 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 17:40:18,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:40:18,151 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 [2019-01-18 17:40:18,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:40:18,160 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 17:40:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:40:18,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 17:40:18,241 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 [2019-01-18 17:40:18,246 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2019-01-18 17:40:18,256 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,259 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 [2019-01-18 17:40:18,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,320 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,321 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 [2019-01-18 17:40:18,328 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,329 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,331 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,332 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,334 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 [2019-01-18 17:40:18,340 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,341 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,342 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,345 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,346 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,347 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 [2019-01-18 17:40:18,354 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,356 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,430 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 [2019-01-18 17:40:18,468 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,469 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,470 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,471 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,472 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,482 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,484 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 [2019-01-18 17:40:18,513 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 [2019-01-18 17:40:18,515 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,631 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,699 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,752 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,791 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,826 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,854 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,877 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,901 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:18,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:18,958 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 [2019-01-18 17:40:19,013 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,014 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,015 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 [2019-01-18 17:40:19,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,076 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 [2019-01-18 17:40:19,165 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,166 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,167 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,168 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,169 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,171 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,172 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 [2019-01-18 17:40:19,293 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,307 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,312 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,314 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 [2019-01-18 17:40:19,419 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,420 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,421 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,422 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,423 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,424 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,428 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,430 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 [2019-01-18 17:40:19,559 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-18 17:40:19,564 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,565 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,566 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,567 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,568 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,569 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,574 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:19,578 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 [2019-01-18 17:40:19,580 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-18 17:40:19,646 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:19,708 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:19,776 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:19,848 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:19,925 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:20,015 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 17:40:20,122 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. [2019-01-18 17:40:20,123 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2019-01-18 17:40:21,907 WARN L181 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 88 [2019-01-18 17:40:21,990 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 17:40:22,061 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 [2019-01-18 17:40:22,062 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-01-18 17:40:22,203 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2019-01-18 17:40:26,264 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. [2019-01-18 17:40:26,265 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1343 [2019-01-18 17:40:36,942 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-18 17:40:37,144 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-18 17:40:37,145 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 [2019-01-18 17:40:37,149 INFO L168 Benchmark]: Toolchain (without parser) took 51324.12 ms. Allocated memory was 134.7 MB in the beginning and 408.4 MB in the end (delta: 273.7 MB). Free memory was 109.8 MB in the beginning and 188.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 195.1 MB. Max. memory is 7.1 GB. [2019-01-18 17:40:37,150 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:40:37,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.33 ms. Allocated memory is still 134.7 MB. Free memory was 109.8 MB in the beginning and 107.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-01-18 17:40:37,152 INFO L168 Benchmark]: Boogie Preprocessor took 43.25 ms. Allocated memory is still 134.7 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-18 17:40:37,152 INFO L168 Benchmark]: RCFGBuilder took 531.51 ms. Allocated memory is still 134.7 MB. Free memory was 105.9 MB in the beginning and 92.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-01-18 17:40:37,153 INFO L168 Benchmark]: TraceAbstraction took 50667.94 ms. Allocated memory was 134.7 MB in the beginning and 408.4 MB in the end (delta: 273.7 MB). Free memory was 92.6 MB in the beginning and 188.3 MB in the end (delta: -95.7 MB). Peak memory consumption was 177.9 MB. Max. memory is 7.1 GB. [2019-01-18 17:40:37,157 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 134.7 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 74.33 ms. Allocated memory is still 134.7 MB. Free memory was 109.8 MB in the beginning and 107.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.25 ms. Allocated memory is still 134.7 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 531.51 ms. Allocated memory is still 134.7 MB. Free memory was 105.9 MB in the beginning and 92.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50667.94 ms. Allocated memory was 134.7 MB in the beginning and 408.4 MB in the end (delta: 273.7 MB). Free memory was 92.6 MB in the beginning and 188.3 MB in the end (delta: -95.7 MB). Peak memory consumption was 177.9 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...