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_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:40:12,995 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:40:12,996 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:40:13,008 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-03-04 16:40:13,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-03-04 16:40:13,010 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-03-04 16:40:13,011 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-03-04 16:40:13,013 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-03-04 16:40:13,014 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-03-04 16:40:13,015 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-03-04 16:40:13,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-03-04 16:40:13,044 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_oct.epf [2019-03-04 16:40:13,069 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:40:13,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:40:13,070 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:40:13,071 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:40:13,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:40:13,071 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:40:13,071 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:40:13,071 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:40:13,071 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:40:13,072 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:40:13,072 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-03-04 16:40:13,072 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:40:13,072 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:40:13,074 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:40:13,074 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:40:13,074 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:40:13,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:40:13,074 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:40:13,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:40:13,075 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:40:13,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:40:13,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:40:13,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:40:13,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:40:13,077 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:40:13,077 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:40:13,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:40:13,078 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:40:13,078 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:40:13,078 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:40:13,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:40:13,079 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:40:13,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:40:13,079 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:40:13,079 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-03-04 16:40:13,079 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:40:13,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:40:13,080 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:40:13,080 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:40:13,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:40:13,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:40:13,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:40:13,146 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:40:13,147 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:40:13,148 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl [2019-03-04 16:40:13,150 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl' [2019-03-04 16:40:13,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:40:13,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:40:13,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:40:13,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:40:13,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:40:13,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:40:13,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:40:13,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:40:13,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:40:13,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... [2019-03-04 16:40:13,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:40:13,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:40:13,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:40:13,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:40:13,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:40:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:40:13,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:40:13,764 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:40:13,764 INFO L286 CfgBuilder]: Removed 19 assue(true) statements. [2019-03-04 16:40:13,766 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:40:13 BoogieIcfgContainer [2019-03-04 16:40:13,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:40:13,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:40:13,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:40:13,771 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:40:13,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:40:13" (1/2) ... [2019-03-04 16:40:13,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647ead8f and model type speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:40:13, skipping insertion in model container [2019-03-04 16:40:13,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:40:13" (2/2) ... [2019-03-04 16:40:13,774 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-limited.bpl [2019-03-04 16:40:13,786 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:40:13,801 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-03-04 16:40:13,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-03-04 16:40:13,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:40:13,907 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:40:13,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:40:13,908 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:40:13,908 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:40:13,908 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:40:13,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:40:13,910 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:40:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-03-04 16:40:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:40:13,943 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:40:13,944 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:40:13,947 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:40:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:40:13,952 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-03-04 16:40:13,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:40:13,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:40:13,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:40:13,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:40:13,996 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:40:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:40:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:40:14,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:40:14,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:40:14,142 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:40:14,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:40:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:40:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:40:14,161 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-03-04 16:40:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:40:14,351 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-03-04 16:40:14,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:40:14,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:40:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:40:14,374 INFO L225 Difference]: With dead ends: 37 [2019-03-04 16:40:14,374 INFO L226 Difference]: Without dead ends: 32 [2019-03-04 16:40:14,379 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 [2019-03-04 16:40:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-03-04 16:40:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2019-03-04 16:40:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-03-04 16:40:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2019-03-04 16:40:14,416 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2019-03-04 16:40:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:40:14,418 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2019-03-04 16:40:14,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:40:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2019-03-04 16:40:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:40:14,419 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:40:14,419 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:40:14,420 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:40:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:40:14,420 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2019-03-04 16:40:14,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:40:14,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:40:14,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:40:14,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:40:14,422 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:40:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:40:14,677 WARN L181 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2019-03-04 16:40:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:40:14,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:40:14,757 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:40:14,758 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:40:14,763 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2019-03-04 16:40:14,838 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2019-03-04 16:40:14,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:40:14,910 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-03-04 16:40:14,911 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-03-04 16:40:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:40:14,916 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-03-04 16:40:14,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:40:14,916 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 [2019-03-04 16:40:14,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:40:14,925 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-03-04 16:40:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:40:14,953 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2019-03-04 16:40:14,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:40:15,048 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-03-04 16:40:15,083 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,085 INFO L453 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 30 treesize of output 32 [2019-03-04 16:40:15,186 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,188 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,190 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,193 INFO L453 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 32 treesize of output 34 [2019-03-04 16:40:15,219 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,229 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,231 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,261 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,276 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,278 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,280 INFO L453 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 34 treesize of output 36 [2019-03-04 16:40:15,309 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,311 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,313 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,316 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,318 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,320 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,324 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,328 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,330 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,333 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,336 INFO L453 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 36 treesize of output 38 [2019-03-04 16:40:15,359 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,361 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,363 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,365 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,367 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,369 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,371 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,375 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,377 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,379 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,381 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,383 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,388 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,394 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,396 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,399 INFO L453 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 38 treesize of output 40 [2019-03-04 16:40:15,421 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,422 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,446 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,462 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,463 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,470 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,481 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,505 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,530 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,554 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,567 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,578 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,580 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,582 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,585 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,586 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,589 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,591 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,593 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,595 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,595 INFO L301 Elim1Store]: Index analysis took 175 ms [2019-03-04 16:40:15,598 INFO L453 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 40 treesize of output 42 [2019-03-04 16:40:15,618 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,620 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,622 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,624 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,627 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,629 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,631 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,633 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,635 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,641 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,644 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,645 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,650 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,651 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,652 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,653 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,655 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,656 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,658 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,660 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,662 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,664 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,666 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,668 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,671 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,672 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,674 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,676 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:15,679 INFO L453 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2019-03-04 16:40:15,680 INFO L309 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-03-04 16:40:15,751 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:15,842 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:15,864 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:15,889 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:15,955 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,135 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,322 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,482 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,483 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,484 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,490 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,497 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,498 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,499 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,501 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,503 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,504 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,514 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,515 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,516 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,519 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2019-03-04 16:40:16,521 INFO L309 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,526 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,528 INFO L309 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,529 INFO L309 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,571 INFO L309 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-03-04 16:40:16,571 INFO L209 ElimStorePlain]: Needed 13 recursive calls to eliminate 8 variables, input treesize:94, output treesize:62 [2019-03-04 16:40:16,695 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,697 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,699 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,700 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,701 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,702 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,703 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,705 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,713 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,714 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,715 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,716 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,718 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,719 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,721 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,722 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,724 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,725 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,727 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,730 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,732 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,733 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,734 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,736 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,737 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,739 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,740 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,741 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:40:16,745 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2019-03-04 16:40:16,746 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:40:16,792 INFO L309 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-03-04 16:40:16,792 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:72, output treesize:64 [2019-03-04 16:40:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:40:19,270 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-03-04 16:40:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:40:19,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-03-04 16:40:19,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-03-04 16:40:19,310 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-03-04 16:40:19,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:40:19,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:40:19,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-03-04 16:40:19,312 INFO L87 Difference]: Start difference. First operand 18 states and 33 transitions. Second operand 6 states. [2019-03-04 16:40:44,662 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:40:44,665 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-03-04 16:40:44,670 INFO L168 Benchmark]: Toolchain (without parser) took 31454.81 ms. Allocated memory was 137.4 MB in the beginning and 213.9 MB in the end (delta: 76.5 MB). Free memory was 104.9 MB in the beginning and 84.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:40:44,671 INFO L168 Benchmark]: Boogie PL CUP Parser took 2.50 ms. Allocated memory is still 137.4 MB. Free memory is still 105.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:40:44,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.44 ms. Allocated memory is still 137.4 MB. Free memory was 104.5 MB in the beginning and 102.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-03-04 16:40:44,673 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 101.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:40:44,674 INFO L168 Benchmark]: RCFGBuilder took 448.21 ms. Allocated memory is still 137.4 MB. Free memory was 101.1 MB in the beginning and 87.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-03-04 16:40:44,675 INFO L168 Benchmark]: TraceAbstraction took 30901.40 ms. Allocated memory was 137.4 MB in the beginning and 213.9 MB in the end (delta: 76.5 MB). Free memory was 87.5 MB in the beginning and 84.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2019-03-04 16:40:44,684 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 2.50 ms. Allocated memory is still 137.4 MB. Free memory is still 105.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.44 ms. Allocated memory is still 137.4 MB. Free memory was 104.5 MB in the beginning and 102.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 101.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.21 ms. Allocated memory is still 137.4 MB. Free memory was 101.1 MB in the beginning and 87.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30901.40 ms. Allocated memory was 137.4 MB in the beginning and 213.9 MB in the end (delta: 76.5 MB). Free memory was 87.5 MB in the beginning and 84.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory: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...