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-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1de736e-m [2019-02-18 09:33:20,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-18 09:33:20,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-18 09:33:20,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-18 09:33:20,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-18 09:33:20,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-18 09:33:20,610 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-18 09:33:20,612 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-18 09:33:20,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-18 09:33:20,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-18 09:33:20,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-18 09:33:20,648 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 [2019-02-18 09:33:20,671 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-18 09:33:20,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-18 09:33:20,673 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-18 09:33:20,673 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-18 09:33:20,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-18 09:33:20,674 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-18 09:33:20,674 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-18 09:33:20,674 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-18 09:33:20,674 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-18 09:33:20,674 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-18 09:33:20,674 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-18 09:33:20,675 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-18 09:33:20,678 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-18 09:33:20,678 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-18 09:33:20,679 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-18 09:33:20,679 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-18 09:33:20,679 INFO L133 SettingsManager]: * Use SBE=true [2019-02-18 09:33:20,679 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-18 09:33:20,679 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-18 09:33:20,680 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-18 09:33:20,681 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-18 09:33:20,682 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-18 09:33:20,682 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-18 09:33:20,682 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-18 09:33:20,682 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-18 09:33:20,682 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-18 09:33:20,683 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-18 09:33:20,683 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-18 09:33:20,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-18 09:33:20,683 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-18 09:33:20,683 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-18 09:33:20,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-02-18 09:33:20,684 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-18 09:33:20,684 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-18 09:33:20,684 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-18 09:33:20,684 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-18 09:33:20,684 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-18 09:33:20,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-02-18 09:33:20,685 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-18 09:33:20,686 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-18 09:33:20,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-18 09:33:20,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-18 09:33:20,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-18 09:33:20,752 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-18 09:33:20,753 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-18 09:33:20,754 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-02-18 09:33:20,754 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-02-18 09:33:20,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-18 09:33:20,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-18 09:33:20,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-18 09:33:20,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-18 09:33:20,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-18 09:33:20,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-18 09:33:20,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-18 09:33:20,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-18 09:33:20,865 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-18 09:33:20,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/1) ... [2019-02-18 09:33:20,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-18 09:33:20,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-18 09:33:20,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-18 09:33:20,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-18 09:33:20,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-02-18 09:33:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-18 09:33:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-18 09:33:21,421 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-18 09:33:21,422 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-02-18 09:33:21,423 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:33:21 BoogieIcfgContainer [2019-02-18 09:33:21,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-18 09:33:21,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-18 09:33:21,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-18 09:33:21,427 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-18 09:33:21,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:33:20" (1/2) ... [2019-02-18 09:33:21,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b14f5a8 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:33:21, skipping insertion in model container [2019-02-18 09:33:21,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:33:21" (2/2) ... [2019-02-18 09:33:21,431 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-02-18 09:33:21,440 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-18 09:33:21,448 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-02-18 09:33:21,466 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-02-18 09:33:21,499 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-18 09:33:21,499 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-18 09:33:21,499 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-18 09:33:21,499 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-18 09:33:21,500 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-18 09:33:21,500 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-18 09:33:21,500 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-18 09:33:21,500 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-18 09:33:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-02-18 09:33:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-18 09:33:21,523 INFO L394 BasicCegarLoop]: Found error trace [2019-02-18 09:33:21,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-18 09:33:21,527 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-02-18 09:33:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:33:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-02-18 09:33:21,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-18 09:33:21,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:33:21,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:33:21,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:33:21,587 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-18 09:33:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:33:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:33:21,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-18 09:33:21,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-18 09:33:21,772 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-18 09:33:21,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-18 09:33:21,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-18 09:33:21,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-18 09:33:21,791 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-02-18 09:33:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-18 09:33:22,138 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-02-18 09:33:22,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-18 09:33:22,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-18 09:33:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-18 09:33:22,154 INFO L225 Difference]: With dead ends: 45 [2019-02-18 09:33:22,155 INFO L226 Difference]: Without dead ends: 40 [2019-02-18 09:33:22,158 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 [2019-02-18 09:33:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-02-18 09:33:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-02-18 09:33:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-02-18 09:33:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-02-18 09:33:22,210 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-02-18 09:33:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-18 09:33:22,212 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-02-18 09:33:22,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-18 09:33:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-02-18 09:33:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-18 09:33:22,213 INFO L394 BasicCegarLoop]: Found error trace [2019-02-18 09:33:22,213 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-18 09:33:22,214 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-02-18 09:33:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:33:22,214 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-02-18 09:33:22,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-18 09:33:22,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:33:22,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:33:22,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:33:22,216 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-18 09:33:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:33:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:33:22,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:33:22,402 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-18 09:33:22,403 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-18 09:33:22,406 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-02-18 09:33:22,451 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-18 09:33:22,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-18 09:33:22,535 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-18 09:33:22,537 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-18 09:33:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:33:22,544 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-18 09:33:22,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:33:22,544 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 [2019-02-18 09:33:22,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:33:22,564 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-18 09:33:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:33:22,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-18 09:33:22,881 WARN L181 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-02-18 09:33:22,903 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 33 treesize of output 36 [2019-02-18 09:33:22,927 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 36 treesize of output 42 [2019-02-18 09:33:22,963 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:22,966 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:22,968 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 38 treesize of output 52 [2019-02-18 09:33:22,992 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:22,994 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:22,996 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:22,999 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 40 treesize of output 66 [2019-02-18 09:33:23,019 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,021 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,023 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,025 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,027 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 42 treesize of output 84 [2019-02-18 09:33:23,043 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,074 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,075 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,080 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,102 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,106 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 44 treesize of output 106 [2019-02-18 09:33:23,150 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,175 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,202 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,208 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,214 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,217 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,217 INFO L303 Elim1Store]: Index analysis took 106 ms [2019-02-18 09:33:23,221 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 46 treesize of output 132 [2019-02-18 09:33:23,249 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,251 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,253 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,255 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,257 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,259 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,262 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,265 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 48 treesize of output 162 [2019-02-18 09:33:23,293 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,296 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,298 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,299 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,307 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,313 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,315 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,317 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:23,323 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-02-18 09:33:23,399 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-02-18 09:33:23,401 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,084 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,242 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,410 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,529 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,592 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,643 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,682 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,711 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,742 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:24,855 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:24,857 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 146 treesize of output 140 [2019-02-18 09:33:24,971 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-02-18 09:33:24,976 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:24,977 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:24,979 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 127 treesize of output 127 [2019-02-18 09:33:25,076 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,078 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,079 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,081 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,083 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 106 treesize of output 123 [2019-02-18 09:33:25,186 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,188 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,189 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,191 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,192 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,208 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,209 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 88 treesize of output 122 [2019-02-18 09:33:25,477 WARN L181 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-02-18 09:33:25,525 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,547 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,549 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,550 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,553 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,554 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,557 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,560 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,562 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 73 treesize of output 130 [2019-02-18 09:33:25,694 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-02-18 09:33:25,738 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,760 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,784 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,801 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,803 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,805 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,807 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,808 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,809 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,810 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:25,811 INFO L303 Elim1Store]: Index analysis took 114 ms [2019-02-18 09:33:25,814 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 61 treesize of output 145 [2019-02-18 09:33:26,018 WARN L181 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-02-18 09:33:26,062 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,069 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,070 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,071 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,071 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,072 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,073 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,075 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,076 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,077 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,083 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,084 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,086 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-02-18 09:33:26,290 WARN L181 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-02-18 09:33:26,311 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,312 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,313 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,314 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,315 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,316 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,317 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,319 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,321 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,322 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,323 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,326 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,327 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,328 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:26,330 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 145 [2019-02-18 09:33:26,384 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,472 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,554 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,638 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,724 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,815 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,906 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:26,998 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:33:27,161 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-18 09:33:27,162 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-18 09:33:27,305 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:33:27,307 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 [2019-02-18 09:33:27,309 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-18 09:33:27,487 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. [2019-02-18 09:33:27,487 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-02-18 09:33:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:33:27,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-18 09:33:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:33:27,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-18 09:33:27,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-18 09:33:27,577 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-18 09:33:27,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-18 09:33:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-18 09:33:27,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-02-18 09:33:27,579 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-02-18 09:36:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-18 09:36:44,521 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-02-18 09:36:44,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-18 09:36:44,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-02-18 09:36:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-18 09:36:44,523 INFO L225 Difference]: With dead ends: 79 [2019-02-18 09:36:44,523 INFO L226 Difference]: Without dead ends: 77 [2019-02-18 09:36:44,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-02-18 09:36:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-02-18 09:36:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-02-18 09:36:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-02-18 09:36:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-02-18 09:36:44,532 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-02-18 09:36:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-18 09:36:44,532 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-02-18 09:36:44,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-02-18 09:36:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-02-18 09:36:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-18 09:36:44,533 INFO L394 BasicCegarLoop]: Found error trace [2019-02-18 09:36:44,533 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-18 09:36:44,533 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-02-18 09:36:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:36:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-02-18 09:36:44,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-18 09:36:44,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:36:44,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:36:44,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:36:44,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-18 09:36:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:36:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:36:44,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:36:44,643 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-18 09:36:44,643 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-18 09:36:44,644 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-02-18 09:36:44,645 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-18 09:36:44,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-18 09:36:44,658 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-18 09:36:44,658 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-18 09:36:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:36:44,659 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-18 09:36:44,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:36:44,659 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-18 09:36:44,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:36:44,670 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-18 09:36:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:36:44,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-18 09:36:44,726 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 33 treesize of output 36 [2019-02-18 09:36:44,731 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 36 treesize of output 42 [2019-02-18 09:36:44,737 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,739 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,740 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 38 treesize of output 52 [2019-02-18 09:36:44,749 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,754 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,756 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,757 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 40 treesize of output 66 [2019-02-18 09:36:44,791 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,793 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,795 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,797 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,798 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 42 treesize of output 84 [2019-02-18 09:36:44,840 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,842 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,846 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,847 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,850 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,852 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 44 treesize of output 106 [2019-02-18 09:36:44,858 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,860 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,862 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,863 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,865 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,866 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,868 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 46 treesize of output 132 [2019-02-18 09:36:44,910 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,931 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,953 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:44,978 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,001 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,026 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,051 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,052 INFO L303 Elim1Store]: Index analysis took 180 ms [2019-02-18 09:36:45,054 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 48 treesize of output 162 [2019-02-18 09:36:45,096 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,126 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,143 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,145 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,147 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,149 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,151 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,153 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,154 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-02-18 09:36:45,183 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-02-18 09:36:45,185 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,313 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,419 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,502 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,571 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,651 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,688 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,718 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,745 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,769 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:45,840 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,841 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 146 treesize of output 140 [2019-02-18 09:36:45,938 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,959 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:45,961 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 127 treesize of output 127 [2019-02-18 09:36:46,059 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,060 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,061 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,063 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,064 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 106 treesize of output 123 [2019-02-18 09:36:46,139 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,140 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,141 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,141 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,143 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,144 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,146 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 88 treesize of output 122 [2019-02-18 09:36:46,241 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,242 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,243 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,244 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,245 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,246 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,247 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,248 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,250 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 73 treesize of output 130 [2019-02-18 09:36:46,366 WARN L181 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-02-18 09:36:46,412 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,434 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,440 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,441 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,441 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,442 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,443 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,444 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,445 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,446 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,448 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 61 treesize of output 145 [2019-02-18 09:36:46,611 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-02-18 09:36:46,616 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,617 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,618 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,619 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,620 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,621 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,623 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,624 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,625 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,626 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,628 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,629 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,631 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-02-18 09:36:46,857 WARN L181 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-02-18 09:36:46,868 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,869 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,870 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,871 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,872 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,873 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,874 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,879 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,879 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,880 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,881 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,882 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,883 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,884 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:46,886 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 145 [2019-02-18 09:36:46,888 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-02-18 09:36:46,970 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,057 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,214 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,300 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,390 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,478 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,565 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,708 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-02-18 09:36:47,709 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-02-18 09:36:47,824 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:36:47,826 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 196 [2019-02-18 09:36:47,827 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-18 09:36:47,960 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. [2019-02-18 09:36:47,961 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-02-18 09:36:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:36:48,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-18 09:36:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:36:48,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-18 09:36:48,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-02-18 09:36:48,111 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-18 09:36:48,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-02-18 09:36:48,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-02-18 09:36:48,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-02-18 09:36:48,112 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-02-18 09:37:13,768 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:8092 -smt2 -in -t:10000) 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 [2019-02-18 09:37:13,771 INFO L168 Benchmark]: Toolchain (without parser) took 232975.40 ms. Allocated memory was 131.6 MB in the beginning and 386.9 MB in the end (delta: 255.3 MB). Free memory was 106.6 MB in the beginning and 145.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 216.3 MB. Max. memory is 7.1 GB. [2019-02-18 09:37:13,772 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 131.6 MB. Free memory is still 108.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-18 09:37:13,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.62 ms. Allocated memory is still 131.6 MB. Free memory was 106.6 MB in the beginning and 104.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-02-18 09:37:13,774 INFO L168 Benchmark]: Boogie Preprocessor took 45.57 ms. Allocated memory is still 131.6 MB. Free memory was 104.2 MB in the beginning and 102.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-02-18 09:37:13,774 INFO L168 Benchmark]: RCFGBuilder took 512.31 ms. Allocated memory is still 131.6 MB. Free memory was 102.7 MB in the beginning and 88.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-02-18 09:37:13,775 INFO L168 Benchmark]: TraceAbstraction took 232346.52 ms. Allocated memory was 131.6 MB in the beginning and 386.9 MB in the end (delta: 255.3 MB). Free memory was 88.1 MB in the beginning and 145.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. [2019-02-18 09:37:13,779 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 0.19 ms. Allocated memory is still 131.6 MB. Free memory is still 108.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.62 ms. Allocated memory is still 131.6 MB. Free memory was 106.6 MB in the beginning and 104.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.57 ms. Allocated memory is still 131.6 MB. Free memory was 104.2 MB in the beginning and 102.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 512.31 ms. Allocated memory is still 131.6 MB. Free memory was 102.7 MB in the beginning and 88.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232346.52 ms. Allocated memory was 131.6 MB in the beginning and 386.9 MB in the end (delta: 255.3 MB). Free memory was 88.1 MB in the beginning and 145.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) 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...