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 0.1.24-0ed9222-m [2019-01-11 14:17:42,728 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 14:17:42,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 14:17:42,742 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 14:17:42,742 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 14:17:42,743 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 14:17:42,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 14:17:42,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 14:17:42,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 14:17:42,749 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 14:17:42,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 14:17:42,783 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-11 14:17:42,802 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 14:17:42,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 14:17:42,803 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 14:17:42,803 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 14:17:42,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 14:17:42,804 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 14:17:42,804 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 14:17:42,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 14:17:42,804 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-11 14:17:42,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 14:17:42,805 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-11 14:17:42,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-11 14:17:42,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 14:17:42,805 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 14:17:42,806 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 14:17:42,806 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 14:17:42,807 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 14:17:42,807 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 14:17:42,807 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 14:17:42,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 14:17:42,807 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 14:17:42,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 14:17:42,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 14:17:42,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 14:17:42,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 14:17:42,808 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 14:17:42,809 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 14:17:42,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 14:17:42,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 14:17:42,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 14:17:42,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 14:17:42,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 14:17:42,810 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 14:17:42,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 14:17:42,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 14:17:42,810 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 14:17:42,811 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 14:17:42,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 14:17:42,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 14:17:42,811 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 14:17:42,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 14:17:42,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 14:17:42,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 14:17:42,856 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 14:17:42,857 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 14:17:42,858 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-11 14:17:42,858 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-11 14:17:42,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 14:17:42,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 14:17:42,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 14:17:42,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 14:17:42,900 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 14:17:42,916 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,928 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 14:17:42,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 14:17:42,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 14:17:42,958 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 14:17:42,968 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,968 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,971 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,971 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,976 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,980 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,982 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 11.01 02:17:42" (1/1) ... [2019-01-11 14:17:42,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 14:17:42,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 14:17:42,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 14:17:42,985 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 14:17:42,986 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 11.01 02:17:42" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-11 14:17:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 14:17:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 14:17:43,612 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 14:17:43,612 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-11 14:17:43,614 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:17:43 BoogieIcfgContainer [2019-01-11 14:17:43,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 14:17:43,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 14:17:43,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 14:17:43,618 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 14:17:43,618 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 11.01 02:17:42" (1/2) ... [2019-01-11 14:17:43,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9b7a23 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:17:43, skipping insertion in model container [2019-01-11 14:17:43,619 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 11.01 02:17:43" (2/2) ... [2019-01-11 14:17:43,621 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-11 14:17:43,630 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 14:17:43,639 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-11 14:17:43,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-11 14:17:43,688 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 14:17:43,689 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 14:17:43,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 14:17:43,689 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 14:17:43,689 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 14:17:43,689 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 14:17:43,690 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 14:17:43,690 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 14:17:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-11 14:17:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-11 14:17:43,711 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:17:43,712 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-11 14:17:43,715 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:17:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:17:43,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-11 14:17:43,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:17:43,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:17:43,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:17:43,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:17:43,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:17:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:17:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:17:43,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 14:17:43,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-11 14:17:43,948 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 14:17:43,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 14:17:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 14:17:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 14:17:43,964 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-11 14:17:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:17:44,257 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-11 14:17:44,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 14:17:44,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-11 14:17:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:17:44,273 INFO L225 Difference]: With dead ends: 45 [2019-01-11 14:17:44,274 INFO L226 Difference]: Without dead ends: 40 [2019-01-11 14:17:44,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 14:17:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-11 14:17:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-11 14:17:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-11 14:17:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-11 14:17:44,322 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-11 14:17:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:17:44,323 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-11 14:17:44,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 14:17:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-11 14:17:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 14:17:44,324 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:17:44,325 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 14:17:44,325 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:17:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:17:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-11 14:17:44,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:17:44,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:17:44,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:17:44,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:17:44,327 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:17:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:17:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:17:44,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:17:44,489 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:17:44,490 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 14:17:44,492 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-11 14:17:44,530 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 14:17:44,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:17:44,611 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:17:44,612 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. [2019-01-11 14:17:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:17:44,618 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:17:44,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:17:44,619 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 14:17:44,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:17:44,632 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:17:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:17:44,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:17:44,836 WARN L181 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-11 14:17:44,868 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 [2019-01-11 14:17:44,885 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 [2019-01-11 14:17:44,902 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:44,904 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:44,907 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 [2019-01-11 14:17:44,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:44,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,002 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 [2019-01-11 14:17:45,038 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,045 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,048 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 [2019-01-11 14:17:45,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,075 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 [2019-01-11 14:17:45,094 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,104 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,114 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 [2019-01-11 14:17:45,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,151 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,153 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,155 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,157 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,159 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,163 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 [2019-01-11 14:17:45,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,204 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,206 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,208 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,212 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,214 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,218 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:45,222 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 [2019-01-11 14:17:45,310 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 [2019-01-11 14:17:45,320 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,075 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,281 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,444 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,549 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,597 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,639 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,693 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,721 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,754 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:46,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:46,866 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 [2019-01-11 14:17:47,010 WARN L181 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-01-11 14:17:47,029 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,030 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,035 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 [2019-01-11 14:17:47,166 WARN L181 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-11 14:17:47,176 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,177 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,180 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,183 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 [2019-01-11 14:17:47,302 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,303 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,304 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,306 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,321 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,323 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 [2019-01-11 14:17:47,748 WARN L181 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-11 14:17:47,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,824 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,846 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,850 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:47,854 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 [2019-01-11 14:17:48,017 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 14:17:48,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,129 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,131 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,135 INFO L303 Elim1Store]: Index analysis took 116 ms [2019-01-11 14:17:48,138 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 [2019-01-11 14:17:48,279 WARN L181 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 14:17:48,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,296 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,296 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,297 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,298 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,300 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,301 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,302 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,304 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,305 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,307 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,310 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 [2019-01-11 14:17:48,585 WARN L181 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 14:17:48,604 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,605 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,606 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,607 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,608 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,610 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,612 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,613 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,616 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,617 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,620 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,620 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:48,623 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 [2019-01-11 14:17:48,626 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 14:17:48,706 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:48,788 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:48,871 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:48,953 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:49,046 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:49,135 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:49,223 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:17:49,371 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. [2019-01-11 14:17:49,372 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-11 14:17:49,547 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-01-11 14:17:49,591 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:17:49,593 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 [2019-01-11 14:17:49,594 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:17:49,786 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. [2019-01-11 14:17:49,790 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 14:17:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:17:49,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:17:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:17:49,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 14:17:49,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 14:17:49,882 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 14:17:49,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 14:17:49,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 14:17:49,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-11 14:17:49,884 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-11 14:17:50,032 WARN L181 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2019-01-11 14:18:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:18:40,534 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-11 14:18:40,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 14:18:40,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 14:18:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:18:40,537 INFO L225 Difference]: With dead ends: 79 [2019-01-11 14:18:40,537 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 14:18:40,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-11 14:18:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 14:18:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-11 14:18:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-11 14:18:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-11 14:18:40,547 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-11 14:18:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:18:40,547 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-11 14:18:40,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 14:18:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-11 14:18:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 14:18:40,548 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:18:40,548 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 14:18:40,548 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:18:40,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:18:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-11 14:18:40,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:18:40,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:18:40,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:18:40,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:18:40,551 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:18:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:18:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:18:40,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:18:40,637 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:18:40,638 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 14:18:40,638 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-11 14:18:40,641 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 14:18:40,641 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:18:40,652 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:18:40,653 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. [2019-01-11 14:18:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:18:40,653 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:18:40,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:18:40,654 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 14:18:40,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:18:40,665 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:18:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:18:40,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:18:40,726 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 [2019-01-11 14:18:40,731 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 [2019-01-11 14:18:40,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,739 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,740 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 [2019-01-11 14:18:40,774 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,776 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,778 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,779 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 [2019-01-11 14:18:40,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,829 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,830 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 [2019-01-11 14:18:40,839 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,843 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,848 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,850 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 [2019-01-11 14:18:40,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,871 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,873 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 [2019-01-11 14:18:40,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,937 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,961 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:40,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,008 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,050 INFO L303 Elim1Store]: Index analysis took 172 ms [2019-01-11 14:18:41,051 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 [2019-01-11 14:18:41,090 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,150 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,186 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,210 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:41,229 INFO L303 Elim1Store]: Index analysis took 172 ms [2019-01-11 14:18:41,231 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 [2019-01-11 14:18:41,342 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 [2019-01-11 14:18:41,344 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,479 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,595 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,683 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,753 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,846 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,883 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,912 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,939 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:41,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:42,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,035 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 [2019-01-11 14:18:42,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,158 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,159 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 [2019-01-11 14:18:42,283 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-11 14:18:42,287 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,291 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 [2019-01-11 14:18:42,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,367 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,368 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,369 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,370 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,371 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,373 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 [2019-01-11 14:18:42,479 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,480 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,481 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,482 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,483 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,484 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,489 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 [2019-01-11 14:18:42,610 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 14:18:42,649 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,672 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,686 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,688 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,688 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,689 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,690 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,691 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,693 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 [2019-01-11 14:18:42,847 WARN L181 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 14:18:42,857 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,861 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,868 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:42,874 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 [2019-01-11 14:18:43,510 WARN L181 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 14:18:43,514 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,515 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,516 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,521 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,522 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,524 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,525 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,526 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,527 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,528 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:43,533 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 [2019-01-11 14:18:43,534 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 14:18:43,615 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:43,698 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:43,864 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:43,951 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:44,042 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:44,140 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:44,238 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:18:44,394 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. [2019-01-11 14:18:44,395 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-11 14:18:44,538 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:18:44,540 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 [2019-01-11 14:18:44,541 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:18:44,694 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. [2019-01-11 14:18:44,695 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 14:18:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:18:44,872 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:18:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:18:44,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 14:18:44,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 14:18:44,915 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 14:18:44,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 14:18:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 14:18:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-11 14:18:44,916 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-11 14:19:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:19:32,746 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2019-01-11 14:19:32,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 14:19:32,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-11 14:19:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:19:32,747 INFO L225 Difference]: With dead ends: 79 [2019-01-11 14:19:32,748 INFO L226 Difference]: Without dead ends: 77 [2019-01-11 14:19:32,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-01-11 14:19:32,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-11 14:19:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 31. [2019-01-11 14:19:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-11 14:19:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 75 transitions. [2019-01-11 14:19:32,770 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 75 transitions. Word has length 3 [2019-01-11 14:19:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:19:32,770 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 75 transitions. [2019-01-11 14:19:32,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 14:19:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 75 transitions. [2019-01-11 14:19:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 14:19:32,771 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:19:32,772 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 14:19:32,773 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:19:32,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:19:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 30020, now seen corresponding path program 1 times [2019-01-11 14:19:32,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:19:32,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:19:32,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:19:32,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:19:32,776 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:19:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:19:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:32,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:19:32,915 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:19:32,916 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 14:19:32,916 INFO L207 CegarAbsIntRunner]: [0], [6], [43] [2019-01-11 14:19:32,917 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 14:19:32,917 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:19:32,927 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:19:32,927 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. [2019-01-11 14:19:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:19:32,928 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:19:32,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:19:32,928 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 14:19:32,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:19:32,938 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:19:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:19:32,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:19:33,005 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 [2019-01-11 14:19:33,011 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 [2019-01-11 14:19:33,015 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,016 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,017 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 [2019-01-11 14:19:33,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,029 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 [2019-01-11 14:19:33,034 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,044 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 [2019-01-11 14:19:33,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,077 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,079 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,085 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 [2019-01-11 14:19:33,091 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,093 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,094 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,100 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,102 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-11 14:19:33,111 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,112 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,120 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 [2019-01-11 14:19:33,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,140 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,141 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,143 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,144 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,146 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,150 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 [2019-01-11 14:19:33,218 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 [2019-01-11 14:19:33,219 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,329 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,425 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,495 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,550 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,596 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,634 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,665 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,693 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,720 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:33,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,787 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 [2019-01-11 14:19:33,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,856 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 [2019-01-11 14:19:33,922 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,925 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:33,927 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 [2019-01-11 14:19:34,018 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,021 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,025 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 [2019-01-11 14:19:34,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,128 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,129 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,131 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,132 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,134 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,135 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,136 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 [2019-01-11 14:19:34,250 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-11 14:19:34,257 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,258 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,259 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,260 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,261 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,262 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,264 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,266 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,270 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,272 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 [2019-01-11 14:19:34,415 WARN L181 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-11 14:19:34,456 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,457 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,458 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,459 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,460 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,461 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,462 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,463 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,464 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,465 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,466 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,468 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,470 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 [2019-01-11 14:19:34,650 WARN L181 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-11 14:19:34,655 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,656 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,694 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,696 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,698 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,699 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,700 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,701 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,702 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,703 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:34,705 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 [2019-01-11 14:19:34,706 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:34,784 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:34,866 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:34,950 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,034 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,120 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,207 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,294 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,490 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 14:19:35,490 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 11 variables, input treesize:182, output treesize:195 [2019-01-11 14:19:35,540 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:35,542 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 [2019-01-11 14:19:35,543 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:35,923 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. [2019-01-11 14:19:35,923 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-11 14:19:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:35,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:19:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:35,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-01-11 14:19:35,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-01-11 14:19:35,966 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 14:19:35,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-11 14:19:35,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-11 14:19:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 14:19:35,967 INFO L87 Difference]: Start difference. First operand 31 states and 75 transitions. Second operand 4 states. [2019-01-11 14:19:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:19:36,079 INFO L93 Difference]: Finished difference Result 37 states and 121 transitions. [2019-01-11 14:19:36,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 14:19:36,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-01-11 14:19:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:19:36,081 INFO L225 Difference]: With dead ends: 37 [2019-01-11 14:19:36,081 INFO L226 Difference]: Without dead ends: 36 [2019-01-11 14:19:36,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-01-11 14:19:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-11 14:19:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-01-11 14:19:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-01-11 14:19:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 120 transitions. [2019-01-11 14:19:36,091 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 120 transitions. Word has length 3 [2019-01-11 14:19:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:19:36,091 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 120 transitions. [2019-01-11 14:19:36,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-11 14:19:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 120 transitions. [2019-01-11 14:19:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 14:19:36,092 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:19:36,092 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 14:19:36,092 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:19:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:19:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash 31074, now seen corresponding path program 1 times [2019-01-11 14:19:36,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:19:36,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:19:36,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:19:36,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:19:36,094 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:19:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:19:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:36,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:19:36,243 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:19:36,243 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-11 14:19:36,243 INFO L207 CegarAbsIntRunner]: [0], [40], [43] [2019-01-11 14:19:36,247 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 14:19:36,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:19:36,256 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:19:36,256 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. [2019-01-11 14:19:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:19:36,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:19:36,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:19:36,257 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-11 14:19:36,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:19:36,268 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:19:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:19:36,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:19:36,333 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,334 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 178 treesize of output 169 [2019-01-11 14:19:36,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,411 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 156 treesize of output 153 [2019-01-11 14:19:36,486 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,487 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,488 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,490 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 132 treesize of output 146 [2019-01-11 14:19:36,569 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,577 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 111 treesize of output 142 [2019-01-11 14:19:36,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,683 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,684 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,685 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,687 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,688 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,689 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,691 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,692 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 93 treesize of output 147 [2019-01-11 14:19:36,815 WARN L181 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-01-11 14:19:36,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,821 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,823 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,824 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,825 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,829 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,831 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,832 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 78 treesize of output 159 [2019-01-11 14:19:36,989 WARN L181 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-01-11 14:19:36,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:36,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,002 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,007 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,009 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 66 treesize of output 178 [2019-01-11 14:19:37,213 WARN L181 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-01-11 14:19:37,219 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,220 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,221 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,222 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,224 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,229 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,233 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,236 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 204 [2019-01-11 14:19:37,484 WARN L181 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2019-01-11 14:19:37,489 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,490 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,491 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,493 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,494 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,495 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,497 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,498 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,499 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,500 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,502 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,503 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,504 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,505 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,507 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,508 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:37,510 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 181 [2019-01-11 14:19:37,511 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:37,629 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:37,749 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:37,919 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,062 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,208 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,339 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,467 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,597 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,749 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 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 [2019-01-11 14:19:38,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 17 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 [2019-01-11 14:19:38,760 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 24 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 [2019-01-11 14:19:38,764 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 30 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 [2019-01-11 14:19:38,770 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 35 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 [2019-01-11 14:19:38,776 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 39 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 [2019-01-11 14:19:38,797 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 42 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 [2019-01-11 14:19:38,817 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 44 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 [2019-01-11 14:19:38,823 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 45 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 [2019-01-11 14:19:38,833 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-11 14:19:38,834 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:38,981 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,079 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,150 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,202 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,242 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,275 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,301 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,324 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,347 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,532 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. [2019-01-11 14:19:39,533 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:214, output treesize:231 [2019-01-11 14:19:39,618 INFO L701 Elim1Store]: detected not equals via solver [2019-01-11 14:19:39,620 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 237 [2019-01-11 14:19:39,621 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-11 14:19:39,919 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-11 14:19:39,919 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:241, output treesize:195 [2019-01-11 14:19:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:39,946 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:19:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:19:39,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 14:19:39,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-11 14:19:39,977 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 14:19:39,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 14:19:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 14:19:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-11 14:19:39,978 INFO L87 Difference]: Start difference. First operand 35 states and 120 transitions. Second operand 6 states. [2019-01-11 14:19:55,903 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:8192 -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 [2019-01-11 14:19:55,907 INFO L168 Benchmark]: Toolchain (without parser) took 133008.48 ms. Allocated memory was 133.2 MB in the beginning and 451.9 MB in the end (delta: 318.8 MB). Free memory was 107.9 MB in the beginning and 239.1 MB in the end (delta: -131.2 MB). Peak memory consumption was 187.6 MB. Max. memory is 7.1 GB. [2019-01-11 14:19:55,908 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.2 MB. Free memory is still 109.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 14:19:55,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.77 ms. Allocated memory is still 133.2 MB. Free memory was 107.9 MB in the beginning and 105.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-11 14:19:55,909 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 ms. Allocated memory is still 133.2 MB. Free memory was 105.4 MB in the beginning and 104.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-11 14:19:55,909 INFO L168 Benchmark]: RCFGBuilder took 629.70 ms. Allocated memory is still 133.2 MB. Free memory was 104.1 MB in the beginning and 90.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-01-11 14:19:55,910 INFO L168 Benchmark]: TraceAbstraction took 132291.61 ms. Allocated memory was 133.2 MB in the beginning and 451.9 MB in the end (delta: 318.8 MB). Free memory was 89.6 MB in the beginning and 239.1 MB in the end (delta: -149.5 MB). Peak memory consumption was 169.3 MB. Max. memory is 7.1 GB. [2019-01-11 14:19:55,913 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 0.18 ms. Allocated memory is still 133.2 MB. Free memory is still 109.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.77 ms. Allocated memory is still 133.2 MB. Free memory was 107.9 MB in the beginning and 105.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.88 ms. Allocated memory is still 133.2 MB. Free memory was 105.4 MB in the beginning and 104.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 629.70 ms. Allocated memory is still 133.2 MB. Free memory was 104.1 MB in the beginning and 90.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 132291.61 ms. Allocated memory was 133.2 MB in the beginning and 451.9 MB in the end (delta: 318.8 MB). Free memory was 89.6 MB in the beginning and 239.1 MB in the end (delta: -149.5 MB). Peak memory consumption was 169.3 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:8192 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8192 -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...