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-e1a14da [2018-12-24 13:50:29,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-24 13:50:29,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-24 13:50:29,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-24 13:50:29,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-24 13:50:29,959 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-24 13:50:29,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-24 13:50:29,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-24 13:50:29,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-24 13:50:29,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-24 13:50:29,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-24 13:50:30,013 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-24 13:50:30,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-24 13:50:30,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-24 13:50:30,039 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-24 13:50:30,039 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-24 13:50:30,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-24 13:50:30,039 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-24 13:50:30,039 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-24 13:50:30,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-24 13:50:30,042 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-24 13:50:30,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-24 13:50:30,042 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-24 13:50:30,042 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-24 13:50:30,043 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-24 13:50:30,043 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-24 13:50:30,043 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-24 13:50:30,047 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-24 13:50:30,047 INFO L133 SettingsManager]: * Use SBE=true [2018-12-24 13:50:30,047 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-24 13:50:30,047 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-24 13:50:30,048 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-24 13:50:30,048 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-24 13:50:30,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-24 13:50:30,048 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-24 13:50:30,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-24 13:50:30,049 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-24 13:50:30,049 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-24 13:50:30,049 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-24 13:50:30,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-24 13:50:30,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-24 13:50:30,049 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-24 13:50:30,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-24 13:50:30,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-24 13:50:30,053 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-24 13:50:30,053 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-24 13:50:30,054 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-24 13:50:30,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-24 13:50:30,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-24 13:50:30,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-24 13:50:30,113 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-24 13:50:30,113 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-24 13:50:30,114 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2018-12-24 13:50:30,115 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2018-12-24 13:50:30,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-24 13:50:30,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-24 13:50:30,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-24 13:50:30,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-24 13:50:30,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-24 13:50:30,176 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,190 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-24 13:50:30,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-24 13:50:30,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-24 13:50:30,223 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-24 13:50:30,235 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,235 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,238 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,238 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,243 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,247 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,249 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 24.12 01:50:30" (1/1) ... [2018-12-24 13:50:30,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-24 13:50:30,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-24 13:50:30,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-24 13:50:30,252 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-24 13:50:30,253 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 24.12 01:50:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-24 13:50:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-24 13:50:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-24 13:50:30,916 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-24 13:50:30,917 INFO L280 CfgBuilder]: Removed 23 assue(true) statements. [2018-12-24 13:50:30,917 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:50:30 BoogieIcfgContainer [2018-12-24 13:50:30,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-24 13:50:30,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-24 13:50:30,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-24 13:50:30,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-24 13:50:30,922 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 24.12 01:50:30" (1/2) ... [2018-12-24 13:50:30,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df97854 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:50:30, skipping insertion in model container [2018-12-24 13:50:30,924 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 24.12 01:50:30" (2/2) ... [2018-12-24 13:50:30,926 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2018-12-24 13:50:30,936 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-24 13:50:30,945 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-12-24 13:50:30,961 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-12-24 13:50:30,994 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-24 13:50:30,995 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-24 13:50:30,995 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-24 13:50:30,995 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-24 13:50:30,995 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-24 13:50:30,995 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-24 13:50:30,996 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-24 13:50:30,996 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-24 13:50:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-24 13:50:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-24 13:50:31,019 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 13:50:31,020 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-24 13:50:31,023 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2018-12-24 13:50:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 13:50:31,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2018-12-24 13:50:31,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 13:50:31,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 13:50:31,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 13:50:31,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 13:50:31,081 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 13:50:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 13:50:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 13:50:31,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-24 13:50:31,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-24 13:50:31,258 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-24 13:50:31,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-24 13:50:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-24 13:50:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-24 13:50:31,277 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-12-24 13:50:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-24 13:50:31,581 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2018-12-24 13:50:31,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-24 13:50:31,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-24 13:50:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-24 13:50:31,598 INFO L225 Difference]: With dead ends: 45 [2018-12-24 13:50:31,599 INFO L226 Difference]: Without dead ends: 40 [2018-12-24 13:50:31,602 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-24 13:50:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-24 13:50:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2018-12-24 13:50:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-24 13:50:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2018-12-24 13:50:31,652 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2018-12-24 13:50:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-24 13:50:31,654 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2018-12-24 13:50:31,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-24 13:50:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2018-12-24 13:50:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-24 13:50:31,663 INFO L394 BasicCegarLoop]: Found error trace [2018-12-24 13:50:31,664 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-24 13:50:31,665 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2018-12-24 13:50:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 13:50:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2018-12-24 13:50:31,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-24 13:50:31,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 13:50:31,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 13:50:31,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-24 13:50:31,669 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-24 13:50:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 13:50:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 13:50:31,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 13:50:31,830 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-24 13:50:31,831 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-24 13:50:31,832 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2018-12-24 13:50:31,874 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-24 13:50:31,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-24 13:50:31,956 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-24 13:50:31,957 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. [2018-12-24 13:50:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-24 13:50:31,963 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-24 13:50:31,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-24 13:50:31,964 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-24 13:50:31,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-24 13:50:31,977 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-24 13:50:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-24 13:50:32,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-24 13:50:32,247 WARN L181 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-12-24 13:50:32,282 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 [2018-12-24 13:50:32,301 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 [2018-12-24 13:50:32,347 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,375 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 [2018-12-24 13:50:32,418 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,440 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,455 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,457 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 [2018-12-24 13:50:32,478 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,480 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,482 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,484 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,488 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 [2018-12-24 13:50:32,506 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,509 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,512 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,514 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,522 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,525 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 [2018-12-24 13:50:32,562 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,584 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,586 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,589 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,610 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,615 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,618 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 [2018-12-24 13:50:32,658 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,662 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,665 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,667 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,670 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,672 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,674 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,678 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 [2018-12-24 13:50:32,790 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,792 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,796 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,800 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,802 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,808 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,810 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:32,817 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 [2018-12-24 13:50:32,949 INFO L303 Elim1Store]: Index analysis took 123 ms [2018-12-24 13:50:32,952 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 [2018-12-24 13:50:32,955 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-24 13:50:33,609 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:33,910 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,063 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,189 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,252 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,309 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,364 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,397 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,428 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:34,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,530 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 [2018-12-24 13:50:34,640 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-12-24 13:50:34,659 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,660 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,662 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 [2018-12-24 13:50:34,796 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-12-24 13:50:34,843 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,867 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,889 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,913 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:34,914 INFO L303 Elim1Store]: Index analysis took 114 ms [2018-12-24 13:50:34,915 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 [2018-12-24 13:50:35,025 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-12-24 13:50:35,068 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,091 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,113 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,118 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,119 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,120 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,121 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 [2018-12-24 13:50:35,391 WARN L181 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-12-24 13:50:35,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,413 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,415 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,417 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,422 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,423 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,424 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,426 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 [2018-12-24 13:50:35,600 WARN L181 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-12-24 13:50:35,609 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,611 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,612 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,613 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,614 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,615 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,617 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,618 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,620 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,621 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,624 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 [2018-12-24 13:50:35,792 WARN L181 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-12-24 13:50:35,812 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,815 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,816 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,817 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,819 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,820 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,821 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,823 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,824 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,827 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,829 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:35,831 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 [2018-12-24 13:50:36,048 WARN L181 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-12-24 13:50:36,094 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,118 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,140 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,156 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,158 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,160 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,161 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,165 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,166 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,167 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,169 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,170 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:36,171 INFO L303 Elim1Store]: Index analysis took 118 ms [2018-12-24 13:50:36,175 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 [2018-12-24 13:50:36,176 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,273 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,370 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,465 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,567 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,672 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,775 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:36,877 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-24 13:50:37,042 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. [2018-12-24 13:50:37,042 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2018-12-24 13:50:37,187 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2018-12-24 13:50:37,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-24 13:50:37,246 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 [2018-12-24 13:50:37,247 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-24 13:50:37,584 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. [2018-12-24 13:50:37,584 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2018-12-24 13:50:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 13:50:37,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-24 13:50:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-24 13:50:37,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-24 13:50:37,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2018-12-24 13:50:37,661 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-24 13:50:37,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-24 13:50:37,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-24 13:50:37,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-24 13:50:37,662 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2018-12-24 13:50:37,833 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-12-24 13:51:00,165 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-24 13:51:00,167 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-12-24 13:51:00,171 INFO L168 Benchmark]: Toolchain (without parser) took 30014.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 708.8 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -148.0 MB). Peak memory consumption was 560.9 MB. Max. memory is 7.1 GB. [2018-12-24 13:51:00,172 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 13:51:00,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 13:51:00,173 INFO L168 Benchmark]: Boogie Preprocessor took 28.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-24 13:51:00,174 INFO L168 Benchmark]: RCFGBuilder took 666.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-24 13:51:00,175 INFO L168 Benchmark]: TraceAbstraction took 29251.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 708.8 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -169.1 MB). Peak memory consumption was 539.7 MB. Max. memory is 7.1 GB. [2018-12-24 13:51:00,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 666.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29251.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 708.8 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -169.1 MB). Peak memory consumption was 539.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...