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-e1a14da [2018-12-24 14:00:07,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-24 14:00:07,251 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-24 14:00:07,263 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-24 14:00:07,263 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-24 14:00:07,264 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-24 14:00:07,266 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-24 14:00:07,267 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-24 14:00:07,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-24 14:00:07,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-24 14:00:07,271 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-24 14:00:07,296 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 [2018-12-24 14:00:07,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-24 14:00:07,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-24 14:00:07,310 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-24 14:00:07,310 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-24 14:00:07,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-24 14:00:07,310 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-24 14:00:07,311 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-24 14:00:07,311 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-24 14:00:07,311 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-24 14:00:07,311 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-24 14:00:07,311 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-24 14:00:07,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-24 14:00:07,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-24 14:00:07,312 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-24 14:00:07,313 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-24 14:00:07,313 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-24 14:00:07,313 INFO L133 SettingsManager]: * Use SBE=true [2018-12-24 14:00:07,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-24 14:00:07,314 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-24 14:00:07,315 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-24 14:00:07,316 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-24 14:00:07,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-24 14:00:07,317 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-24 14:00:07,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-24 14:00:07,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-24 14:00:07,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-24 14:00:07,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-24 14:00:07,318 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-24 14:00:07,319 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-24 14:00:07,321 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-24 14:00:07,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-24 14:00:07,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-24 14:00:07,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-24 14:00:07,380 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-24 14:00:07,381 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-24 14:00:07,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl [2018-12-24 14:00:07,383 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-unlimited.bpl' [2018-12-24 14:00:07,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-24 14:00:07,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-24 14:00:07,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-24 14:00:07,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-24 14:00:07,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-24 14:00:07,439 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,450 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-24 14:00:07,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-24 14:00:07,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-24 14:00:07,481 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-24 14:00:07,493 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,493 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,496 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,496 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,501 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,505 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,507 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 02:00:07" (1/1) ... [2018-12-24 14:00:07,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-24 14:00:07,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-24 14:00:07,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-24 14:00:07,510 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-24 14:00:07,511 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 02:00:07" (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 14:00:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-24 14:00:07,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-24 14:00:08,100 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-24 14:00:08,100 INFO L280 CfgBuilder]: Removed 21 assue(true) statements. [2018-12-24 14:00:08,101 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:00:08 BoogieIcfgContainer [2018-12-24 14:00:08,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-24 14:00:08,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-24 14:00:08,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-24 14:00:08,106 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-24 14:00:08,106 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 02:00:07" (1/2) ... [2018-12-24 14:00:08,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6809791e and model type speedup-poc-dd-9-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:00:08, skipping insertion in model container [2018-12-24 14:00:08,108 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 02:00:08" (2/2) ... [2018-12-24 14:00:08,109 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-unlimited.bpl [2018-12-24 14:00:08,122 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-24 14:00:08,130 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-24 14:00:08,148 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-24 14:00:08,177 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-24 14:00:08,177 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-24 14:00:08,177 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-24 14:00:08,178 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-24 14:00:08,178 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-24 14:00:08,178 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-24 14:00:08,178 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-24 14:00:08,178 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-24 14:00:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-24 14:00:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-24 14:00:08,199 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:00:08,200 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-24 14:00:08,203 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:00:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2018-12-24 14:00:08,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:00:08,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:08,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:08,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:08,258 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:00:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:08,448 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 14:00:08,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-24 14:00:08,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-24 14:00:08,451 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-24 14:00:08,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-24 14:00:08,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-24 14:00:08,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-24 14:00:08,472 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-12-24 14:00:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:00:08,752 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2018-12-24 14:00:08,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-24 14:00:08,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-24 14:00:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:00:08,767 INFO L225 Difference]: With dead ends: 41 [2018-12-24 14:00:08,767 INFO L226 Difference]: Without dead ends: 36 [2018-12-24 14:00:08,770 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 14:00:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-24 14:00:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2018-12-24 14:00:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-24 14:00:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2018-12-24 14:00:08,810 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2018-12-24 14:00:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:00:08,812 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2018-12-24 14:00:08,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-24 14:00:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2018-12-24 14:00:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:00:08,813 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:00:08,813 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:00:08,814 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:00:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2018-12-24 14:00:08,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:00:08,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:08,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:08,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:08,816 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:00:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:08,978 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 14:00:08,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:08,979 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:00:08,980 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:00:08,982 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2018-12-24 14:00:09,020 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-24 14:00:09,021 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:00:09,092 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:00:09,094 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. [2018-12-24 14:00:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:09,099 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:00:09,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:09,099 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 14:00:09,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:09,109 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:00:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:09,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:00:09,306 WARN L181 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-24 14:00:09,327 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 14:00:09,340 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 14:00:09,384 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,411 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 14:00:09,424 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,426 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,437 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 14:00:09,482 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,508 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,534 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,564 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,565 INFO L303 Elim1Store]: Index analysis took 122 ms [2018-12-24 14:00:09,567 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 14:00:09,603 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,633 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,656 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,678 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,704 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,704 INFO L303 Elim1Store]: Index analysis took 132 ms [2018-12-24 14:00:09,707 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 14:00:09,748 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,770 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,783 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,785 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,787 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,789 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,798 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 14:00:09,853 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,855 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,857 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,859 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,861 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,863 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,866 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:09,870 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 14:00:09,918 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 14:00:09,921 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,348 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,707 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,772 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,824 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,865 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,915 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,941 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:10,998 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:11,139 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,140 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 14:00:11,221 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,222 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,225 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 14:00:11,310 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,314 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,315 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,319 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,321 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 14:00:11,445 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,473 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,490 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,513 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,533 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,538 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,538 INFO L303 Elim1Store]: Index analysis took 124 ms [2018-12-24 14:00:11,540 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 14:00:11,690 WARN L181 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-12-24 14:00:11,698 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,699 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,701 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,702 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,704 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,705 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,707 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,708 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,711 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 14:00:11,886 WARN L181 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-12-24 14:00:11,894 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,895 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,899 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,906 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,907 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,908 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,909 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,910 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:11,913 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 14:00:12,171 WARN L181 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:00:12,212 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,214 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,216 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,218 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,220 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,222 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,225 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,225 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,226 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,227 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,228 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,229 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:12,232 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 14:00:12,233 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,341 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,415 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,532 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,607 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,698 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,779 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:12,918 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 14:00:12,919 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:00:13,171 WARN L181 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-12-24 14:00:13,278 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:13,280 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 14:00:13,282 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:13,537 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 14:00:13,537 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2018-12-24 14:00:13,565 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 14:00:13,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-24 14:00:13,579 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 14:00:13,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-24 14:00:13,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2018-12-24 14:00:13,599 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-24 14:00:13,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-24 14:00:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-24 14:00:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 14:00:13,601 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2018-12-24 14:00:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:00:25,568 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2018-12-24 14:00:25,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-24 14:00:25,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2018-12-24 14:00:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:00:25,572 INFO L225 Difference]: With dead ends: 71 [2018-12-24 14:00:25,572 INFO L226 Difference]: Without dead ends: 69 [2018-12-24 14:00:25,573 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 [2018-12-24 14:00:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-12-24 14:00:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 24. [2018-12-24 14:00:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-24 14:00:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2018-12-24 14:00:25,581 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 3 [2018-12-24 14:00:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:00:25,581 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2018-12-24 14:00:25,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-24 14:00:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2018-12-24 14:00:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:00:25,581 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:00:25,582 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:00:25,582 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:00:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:25,582 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2018-12-24 14:00:25,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:00:25,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:25,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:25,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:25,584 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:00:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:25,697 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 14:00:25,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:25,698 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:00:25,698 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:00:25,698 INFO L207 CegarAbsIntRunner]: [0], [34], [39] [2018-12-24 14:00:25,702 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-24 14:00:25,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:00:25,715 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:00:25,716 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. [2018-12-24 14:00:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:25,717 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:00:25,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:25,717 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 14:00:25,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:25,733 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:00:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:25,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:00:25,835 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:25,836 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 14:00:25,944 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2018-12-24 14:00:25,950 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:25,955 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:25,956 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 14:00:26,015 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,017 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,018 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,020 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,022 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 14:00:26,146 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,147 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,148 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,158 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,160 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,161 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 14:00:26,350 WARN L181 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-12-24 14:00:26,387 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,388 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,389 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,390 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,391 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,392 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,394 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,395 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,397 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 14:00:26,502 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,510 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,511 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,512 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,513 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,514 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,515 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,517 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,518 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,519 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,522 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 14:00:26,658 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:00:26,665 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,667 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,668 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,669 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,671 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,674 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,675 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,676 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,677 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,678 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,679 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,681 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:26,684 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 14:00:26,685 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:26,745 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:26,808 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:26,872 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:26,939 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,008 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,187 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 14:00:27,207 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 14:00:27,224 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 14:00:27,243 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 14:00:27,263 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 14:00:27,282 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 14:00:27,301 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 14:00:27,321 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 14:00:27,344 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 14:00:27,345 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,430 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,493 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,542 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,580 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,610 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,635 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,657 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,676 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:27,784 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 14:00:27,784 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:00:27,853 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:27,854 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 14:00:27,856 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:28,143 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 14:00:28,144 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:163, output treesize:125 [2018-12-24 14:00:28,175 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 14:00:28,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-24 14:00:28,207 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 14:00:28,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-24 14:00:28,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2018-12-24 14:00:28,227 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-24 14:00:28,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-24 14:00:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-24 14:00:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 14:00:28,228 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand 6 states. [2018-12-24 14:00:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 14:00:39,490 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2018-12-24 14:00:39,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-24 14:00:39,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2018-12-24 14:00:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 14:00:39,492 INFO L225 Difference]: With dead ends: 54 [2018-12-24 14:00:39,493 INFO L226 Difference]: Without dead ends: 52 [2018-12-24 14:00:39,493 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 14:00:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-24 14:00:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 29. [2018-12-24 14:00:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-24 14:00:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 69 transitions. [2018-12-24 14:00:39,501 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 69 transitions. Word has length 3 [2018-12-24 14:00:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 14:00:39,501 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 69 transitions. [2018-12-24 14:00:39,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-24 14:00:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 69 transitions. [2018-12-24 14:00:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 14:00:39,502 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 14:00:39,502 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 14:00:39,502 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT]=== [2018-12-24 14:00:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash 30946, now seen corresponding path program 1 times [2018-12-24 14:00:39,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 14:00:39,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:39,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:39,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 14:00:39,504 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 14:00:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:39,617 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 14:00:39,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:39,618 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 14:00:39,618 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 14:00:39,618 INFO L207 CegarAbsIntRunner]: [0], [36], [39] [2018-12-24 14:00:39,620 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-24 14:00:39,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 14:00:39,631 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 14:00:39,631 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. [2018-12-24 14:00:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 14:00:39,632 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 14:00:39,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 14:00:39,632 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 14:00:39,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 14:00:39,642 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 14:00:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 14:00:39,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 14:00:39,722 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 14:00:39,730 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 14:00:39,738 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,740 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,741 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 14:00:39,779 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,791 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,794 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,795 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 14:00:39,807 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,808 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,809 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,813 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 14:00:39,858 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,880 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,907 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,924 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,948 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:39,948 INFO L303 Elim1Store]: Index analysis took 131 ms [2018-12-24 14:00:39,949 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 14:00:39,992 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,005 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,036 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,057 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,082 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,100 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,100 INFO L303 Elim1Store]: Index analysis took 148 ms [2018-12-24 14:00:40,102 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 14:00:40,145 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,147 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,149 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,151 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,153 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,166 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 14:00:40,218 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 14:00:40,219 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,344 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,424 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,484 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,531 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,567 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,598 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,623 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,647 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:40,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,729 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 14:00:40,785 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,786 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,787 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 14:00:40,852 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,853 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,854 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,856 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,857 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 14:00:40,969 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,984 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,986 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,986 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,987 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,989 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:40,991 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 14:00:41,102 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-12-24 14:00:41,136 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,181 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,182 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,183 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,184 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,185 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,186 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,188 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 14:00:41,293 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,294 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,295 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,296 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,298 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,299 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,300 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,301 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,302 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,304 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,306 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 14:00:41,435 WARN L181 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-12-24 14:00:41,441 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,442 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,443 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,443 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,445 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,446 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,447 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,448 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,449 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,452 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,453 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:41,455 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 14:00:41,457 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,514 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,574 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,636 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,724 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,786 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,848 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 14:00:41,953 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 14:00:41,954 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:150, output treesize:158 [2018-12-24 14:00:43,742 WARN L181 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 88 [2018-12-24 14:00:43,831 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 14:00:43,904 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 14:00:43,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-12-24 14:00:44,070 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 256 xjuncts. [2018-12-24 14:00:48,105 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 14:00:48,106 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:168, output treesize:1367 [2018-12-24 14:00:58,798 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-24 14:00:58,999 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-24 14:00:59,001 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 14:00:59,006 INFO L168 Benchmark]: Toolchain (without parser) took 51585.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 952.6 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -305.8 MB). Peak memory consumption was 646.8 MB. Max. memory is 7.1 GB. [2018-12-24 14:00:59,007 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 14:00:59,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.41 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 14:00:59,008 INFO L168 Benchmark]: Boogie Preprocessor took 28.94 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 14:00:59,008 INFO L168 Benchmark]: RCFGBuilder took 591.22 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 14:00:59,009 INFO L168 Benchmark]: TraceAbstraction took 50902.76 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 952.6 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -326.9 MB). Peak memory consumption was 625.7 MB. Max. memory is 7.1 GB. [2018-12-24 14:00:59,012 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 0.23 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 58.41 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 28.94 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 591.22 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 50902.76 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 952.6 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -326.9 MB). Peak memory consumption was 625.7 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...