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-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1de736e-m [2019-02-15 10:57:51,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-15 10:57:51,674 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-15 10:57:51,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-15 10:57:51,686 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-15 10:57:51,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-15 10:57:51,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-15 10:57:51,691 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-15 10:57:51,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-15 10:57:51,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-15 10:57:51,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-15 10:57:51,722 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 [2019-02-15 10:57:51,736 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-15 10:57:51,736 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-15 10:57:51,737 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-15 10:57:51,737 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-15 10:57:51,737 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-15 10:57:51,738 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-15 10:57:51,738 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-15 10:57:51,738 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-15 10:57:51,738 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-15 10:57:51,739 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-15 10:57:51,739 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-15 10:57:51,739 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-15 10:57:51,739 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-15 10:57:51,740 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-15 10:57:51,740 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-15 10:57:51,741 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-15 10:57:51,741 INFO L133 SettingsManager]: * Use SBE=true [2019-02-15 10:57:51,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-15 10:57:51,741 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-15 10:57:51,741 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-15 10:57:51,742 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-15 10:57:51,742 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-15 10:57:51,742 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-15 10:57:51,742 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-15 10:57:51,742 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-15 10:57:51,743 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-15 10:57:51,743 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-15 10:57:51,743 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-15 10:57:51,743 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-15 10:57:51,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-15 10:57:51,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-15 10:57:51,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-02-15 10:57:51,744 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-15 10:57:51,744 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-15 10:57:51,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-15 10:57:51,745 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-15 10:57:51,745 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-15 10:57:51,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-02-15 10:57:51,745 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-15 10:57:51,746 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-15 10:57:51,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-15 10:57:51,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-15 10:57:51,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-15 10:57:51,805 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-15 10:57:51,806 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-15 10:57:51,807 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl [2019-02-15 10:57:51,807 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl' [2019-02-15 10:57:51,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-15 10:57:51,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-15 10:57:51,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-15 10:57:51,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-15 10:57:51,871 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-15 10:57:51,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-15 10:57:51,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-15 10:57:51,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-15 10:57:51,946 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-15 10:57:51,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/1) ... [2019-02-15 10:57:51,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-15 10:57:51,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-15 10:57:51,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-15 10:57:51,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-15 10:57:51,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (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 [2019-02-15 10:57:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-15 10:57:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-15 10:57:52,517 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-15 10:57:52,517 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-02-15 10:57:52,519 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:57:52 BoogieIcfgContainer [2019-02-15 10:57:52,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-15 10:57:52,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-15 10:57:52,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-15 10:57:52,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-15 10:57:52,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 10:57:51" (1/2) ... [2019-02-15 10:57:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4692856c and model type speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:57:52, skipping insertion in model container [2019-02-15 10:57:52,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:57:52" (2/2) ... [2019-02-15 10:57:52,528 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-limited.bpl [2019-02-15 10:57:52,537 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-15 10:57:52,545 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-02-15 10:57:52,562 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-02-15 10:57:52,596 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-15 10:57:52,596 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-15 10:57:52,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-15 10:57:52,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-15 10:57:52,597 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-15 10:57:52,597 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-15 10:57:52,597 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-15 10:57:52,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-15 10:57:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-02-15 10:57:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-15 10:57:52,624 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 10:57:52,625 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-15 10:57:52,629 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-02-15 10:57:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 10:57:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-02-15 10:57:52,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 10:57:52,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 10:57:52,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 10:57:52,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 10:57:52,693 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 10:57:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 10:57:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 10:57:52,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-15 10:57:52,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-15 10:57:52,859 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-15 10:57:52,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-15 10:57:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-15 10:57:52,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-15 10:57:52,880 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-02-15 10:57:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-15 10:57:53,116 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-02-15 10:57:53,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-15 10:57:53,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-15 10:57:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-15 10:57:53,132 INFO L225 Difference]: With dead ends: 41 [2019-02-15 10:57:53,133 INFO L226 Difference]: Without dead ends: 36 [2019-02-15 10:57:53,136 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 [2019-02-15 10:57:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-02-15 10:57:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-02-15 10:57:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-02-15 10:57:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-02-15 10:57:53,187 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-02-15 10:57:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-15 10:57:53,189 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-02-15 10:57:53,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-15 10:57:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-02-15 10:57:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-15 10:57:53,189 INFO L394 BasicCegarLoop]: Found error trace [2019-02-15 10:57:53,190 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-15 10:57:53,190 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-02-15 10:57:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 10:57:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-02-15 10:57:53,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-15 10:57:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 10:57:53,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 10:57:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-15 10:57:53,192 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-15 10:57:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 10:57:53,402 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-02-15 10:57:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 10:57:53,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 10:57:53,479 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-15 10:57:53,480 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-15 10:57:53,482 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-02-15 10:57:53,529 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-15 10:57:53,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-15 10:57:53,613 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-15 10:57:53,614 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-15 10:57:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-15 10:57:53,622 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-15 10:57:53,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-15 10:57:53,623 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 [2019-02-15 10:57:53,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-15 10:57:53,641 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-15 10:57:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-15 10:57:53,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-15 10:57:54,206 WARN L181 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-02-15 10:57:54,238 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-02-15 10:57:54,272 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,275 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 [2019-02-15 10:57:54,299 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,301 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,303 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 [2019-02-15 10:57:54,338 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,340 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,342 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,345 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 [2019-02-15 10:57:54,382 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,384 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,386 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,389 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,394 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 [2019-02-15 10:57:54,424 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,428 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,433 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,438 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,440 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,443 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 [2019-02-15 10:57:54,476 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,478 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,480 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,482 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,484 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,487 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,491 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 [2019-02-15 10:57:54,516 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,518 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,520 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,521 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,523 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,526 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,528 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,532 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 [2019-02-15 10:57:54,583 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,596 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,610 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,612 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,613 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,614 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,615 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,617 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:54,621 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-02-15 10:57:54,624 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,118 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,232 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,333 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,416 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,507 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,543 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,571 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,600 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:55,723 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,724 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,727 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 92 treesize of output 95 [2019-02-15 10:57:55,751 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-02-15 10:57:55,785 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,790 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,791 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 73 treesize of output 78 [2019-02-15 10:57:55,900 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,923 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,946 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,959 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,961 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,965 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,969 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:55,969 INFO L303 Elim1Store]: Index analysis took 115 ms [2019-02-15 10:57:55,971 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-02-15 10:57:56,071 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,072 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,083 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,084 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,085 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,086 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,087 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,090 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,092 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 [2019-02-15 10:57:56,245 WARN L181 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-02-15 10:57:56,265 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,266 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,267 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,268 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,268 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,270 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,271 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,272 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,274 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,276 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,279 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 [2019-02-15 10:57:56,497 WARN L181 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-02-15 10:57:56,539 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,563 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,586 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,608 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,636 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,657 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,679 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,702 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,729 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,753 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,776 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,797 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:56,798 INFO L303 Elim1Store]: Index analysis took 297 ms [2019-02-15 10:57:56,800 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 [2019-02-15 10:57:56,801 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,813 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,824 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,838 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,851 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,871 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,896 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-15 10:57:56,957 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. [2019-02-15 10:57:56,958 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-02-15 10:57:57,025 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,027 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,028 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,029 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,030 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,031 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,033 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,034 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,037 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,038 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,039 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,041 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,043 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,044 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,045 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,046 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,047 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,048 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,050 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,051 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,052 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,053 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,055 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,056 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,057 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,059 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,060 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,062 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,063 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,064 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,065 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,067 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,068 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,070 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,071 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,073 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,074 INFO L701 Elim1Store]: detected not equals via solver [2019-02-15 10:57:57,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-02-15 10:57:57,079 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-15 10:57:57,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-15 10:57:57,281 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-02-15 10:58:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 10:58:00,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-15 10:58:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-15 10:58:00,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-15 10:58:00,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-15 10:58:00,248 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-15 10:58:00,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-15 10:58:00,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-15 10:58:00,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-02-15 10:58:00,250 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-02-15 10:58:21,771 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-02-15 10:58:21,773 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-02-15 10:58:21,777 INFO L168 Benchmark]: Toolchain (without parser) took 29907.77 ms. Allocated memory was 138.4 MB in the beginning and 262.7 MB in the end (delta: 124.3 MB). Free memory was 105.4 MB in the beginning and 220.2 MB in the end (delta: -114.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-02-15 10:58:21,778 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-15 10:58:21,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.99 ms. Allocated memory is still 138.4 MB. Free memory was 105.4 MB in the beginning and 102.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-02-15 10:58:21,780 INFO L168 Benchmark]: Boogie Preprocessor took 47.69 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 102.0 MB in the end (delta: 902.2 kB). Peak memory consumption was 902.2 kB. Max. memory is 7.1 GB. [2019-02-15 10:58:21,781 INFO L168 Benchmark]: RCFGBuilder took 526.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 87.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-02-15 10:58:21,781 INFO L168 Benchmark]: TraceAbstraction took 29255.22 ms. Allocated memory was 138.4 MB in the beginning and 262.7 MB in the end (delta: 124.3 MB). Free memory was 87.7 MB in the beginning and 220.2 MB in the end (delta: -132.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-02-15 10:58:21,785 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 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.99 ms. Allocated memory is still 138.4 MB. Free memory was 105.4 MB in the beginning and 102.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.69 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 102.0 MB in the end (delta: 902.2 kB). Peak memory consumption was 902.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 526.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 87.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29255.22 ms. Allocated memory was 138.4 MB in the beginning and 262.7 MB in the end (delta: 124.3 MB). Free memory was 87.7 MB in the beginning and 220.2 MB in the end (delta: -132.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...