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-8-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-20 10:10:14,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-20 10:10:14,468 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-20 10:10:14,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-20 10:10:14,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-20 10:10:14,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-20 10:10:14,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-20 10:10:14,485 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-20 10:10:14,487 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-20 10:10:14,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-20 10:10:14,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-20 10:10:14,534 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-20 10:10:14,561 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-20 10:10:14,561 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-20 10:10:14,562 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-20 10:10:14,562 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-20 10:10:14,562 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-20 10:10:14,562 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-20 10:10:14,563 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-20 10:10:14,563 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-20 10:10:14,563 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-20 10:10:14,563 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-20 10:10:14,563 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-20 10:10:14,563 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-20 10:10:14,564 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-20 10:10:14,564 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-20 10:10:14,565 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-20 10:10:14,565 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-20 10:10:14,566 INFO L133 SettingsManager]: * Use SBE=true [2019-01-20 10:10:14,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-20 10:10:14,566 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-20 10:10:14,566 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-20 10:10:14,566 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-20 10:10:14,567 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-20 10:10:14,567 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-20 10:10:14,567 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-20 10:10:14,567 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-20 10:10:14,567 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-20 10:10:14,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-20 10:10:14,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-20 10:10:14,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-20 10:10:14,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-20 10:10:14,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-20 10:10:14,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-20 10:10:14,571 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-20 10:10:14,571 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-20 10:10:14,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-20 10:10:14,572 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-20 10:10:14,572 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-20 10:10:14,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-20 10:10:14,572 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-20 10:10:14,573 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-20 10:10:14,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-20 10:10:14,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-20 10:10:14,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-20 10:10:14,632 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-20 10:10:14,632 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-20 10:10:14,633 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl [2019-01-20 10:10:14,633 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-limited.bpl' [2019-01-20 10:10:14,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-20 10:10:14,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-20 10:10:14,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-20 10:10:14,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-20 10:10:14,696 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-20 10:10:14,713 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,728 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-20 10:10:14,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-20 10:10:14,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-20 10:10:14,765 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-20 10:10:14,778 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,778 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,781 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,781 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,794 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,801 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,802 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 20.01 10:10:14" (1/1) ... [2019-01-20 10:10:14,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-20 10:10:14,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-20 10:10:14,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-20 10:10:14,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-20 10:10:14,814 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 20.01 10:10:14" (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 [2019-01-20 10:10:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-20 10:10:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-20 10:10:15,298 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-20 10:10:15,298 INFO L286 CfgBuilder]: Removed 19 assue(true) statements. [2019-01-20 10:10:15,307 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:10:15 BoogieIcfgContainer [2019-01-20 10:10:15,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-20 10:10:15,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-20 10:10:15,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-20 10:10:15,311 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-20 10:10:15,312 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 20.01 10:10:14" (1/2) ... [2019-01-20 10:10:15,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b1ffb7 and model type speedup-poc-dd-8-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:10:15, skipping insertion in model container [2019-01-20 10:10:15,314 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 20.01 10:10:15" (2/2) ... [2019-01-20 10:10:15,315 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-limited.bpl [2019-01-20 10:10:15,325 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-20 10:10:15,336 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-01-20 10:10:15,353 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-01-20 10:10:15,395 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-20 10:10:15,395 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-20 10:10:15,395 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-20 10:10:15,396 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-20 10:10:15,396 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-20 10:10:15,396 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-20 10:10:15,396 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-20 10:10:15,396 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-20 10:10:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-01-20 10:10:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-20 10:10:15,432 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:10:15,433 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-20 10:10:15,436 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:10:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:10:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-01-20 10:10:15,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:10:15,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:10:15,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:10:15,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:10:15,499 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:10:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:10:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:10:15,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-20 10:10:15,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-20 10:10:15,648 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-20 10:10:15,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-20 10:10:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-20 10:10:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-20 10:10:15,666 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-01-20 10:10:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-20 10:10:15,911 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-01-20 10:10:15,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-20 10:10:15,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-20 10:10:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-20 10:10:15,926 INFO L225 Difference]: With dead ends: 37 [2019-01-20 10:10:15,927 INFO L226 Difference]: Without dead ends: 32 [2019-01-20 10:10:15,930 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-20 10:10:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-01-20 10:10:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2019-01-20 10:10:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-20 10:10:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2019-01-20 10:10:15,968 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2019-01-20 10:10:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-20 10:10:15,969 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2019-01-20 10:10:15,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-20 10:10:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2019-01-20 10:10:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-20 10:10:15,970 INFO L394 BasicCegarLoop]: Found error trace [2019-01-20 10:10:15,970 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-20 10:10:15,971 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-01-20 10:10:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:10:15,971 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2019-01-20 10:10:15,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-20 10:10:15,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:10:15,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:10:15,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-20 10:10:15,973 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-20 10:10:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:10:16,210 WARN L181 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-20 10:10:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:10:16,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:10:16,220 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-20 10:10:16,222 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-20 10:10:16,224 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2019-01-20 10:10:16,256 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-20 10:10:16,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-20 10:10:16,353 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-20 10:10:16,355 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 98 root evaluator evaluations with a maximum evaluation depth of 3. Performed 98 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-20 10:10:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-20 10:10:16,365 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-20 10:10:16,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-20 10:10:16,365 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-20 10:10:16,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-20 10:10:16,384 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-20 10:10:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-20 10:10:16,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-20 10:10:16,891 WARN L181 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-01-20 10:10:16,925 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2019-01-20 10:10:16,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:16,946 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 30 treesize of output 36 [2019-01-20 10:10:16,976 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:16,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:16,979 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 32 treesize of output 46 [2019-01-20 10:10:17,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,009 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 34 treesize of output 60 [2019-01-20 10:10:17,056 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,071 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,074 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,076 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 36 treesize of output 78 [2019-01-20 10:10:17,112 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,117 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,123 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,125 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,127 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 38 treesize of output 100 [2019-01-20 10:10:17,147 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,149 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,169 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,216 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,240 INFO L303 Elim1Store]: Index analysis took 107 ms [2019-01-20 10:10:17,243 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 40 treesize of output 126 [2019-01-20 10:10:17,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,268 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,271 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,274 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:17,283 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 153 [2019-01-20 10:10:17,289 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-01-20 10:10:17,643 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:17,885 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:17,949 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,006 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,038 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,070 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,095 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,195 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,196 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 43 treesize of output 52 [2019-01-20 10:10:18,210 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 40 [2019-01-20 10:10:18,235 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,242 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,244 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,245 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,259 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,261 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 67 [2019-01-20 10:10:18,283 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 43 treesize of output 62 [2019-01-20 10:10:18,292 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,295 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,297 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,309 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 80 [2019-01-20 10:10:18,533 WARN L181 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-01-20 10:10:18,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,620 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,631 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,633 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,635 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,637 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 61 [2019-01-20 10:10:18,638 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,641 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,643 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,646 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,648 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,654 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-20 10:10:18,699 INFO L267 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. [2019-01-20 10:10:18,700 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 8 variables, input treesize:94, output treesize:62 [2019-01-20 10:10:18,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,786 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,787 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,788 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,789 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,789 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,790 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,791 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,793 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,799 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,802 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,821 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-20 10:10:18,826 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 159 [2019-01-20 10:10:18,827 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-20 10:10:19,076 INFO L267 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. [2019-01-20 10:10:19,077 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:72, output treesize:62 [2019-01-20 10:10:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:10:21,583 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-20 10:10:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-20 10:10:21,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-20 10:10:21,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-20 10:10:21,675 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-20 10:10:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-20 10:10:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-20 10:10:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-20 10:10:21,677 INFO L87 Difference]: Start difference. First operand 18 states and 33 transitions. Second operand 6 states. [2019-01-20 10:10:46,432 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-20 10:10:46,434 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 [2019-01-20 10:10:46,438 INFO L168 Benchmark]: Toolchain (without parser) took 31743.58 ms. Allocated memory was 134.7 MB in the beginning and 253.8 MB in the end (delta: 119.0 MB). Free memory was 107.5 MB in the beginning and 212.0 MB in the end (delta: -104.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-01-20 10:10:46,439 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 134.7 MB. Free memory is still 109.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-20 10:10:46,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.91 ms. Allocated memory is still 134.7 MB. Free memory was 107.5 MB in the beginning and 105.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-01-20 10:10:46,441 INFO L168 Benchmark]: Boogie Preprocessor took 46.97 ms. Allocated memory is still 134.7 MB. Free memory was 105.2 MB in the beginning and 103.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-20 10:10:46,441 INFO L168 Benchmark]: RCFGBuilder took 494.85 ms. Allocated memory is still 134.7 MB. Free memory was 103.7 MB in the beginning and 90.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-01-20 10:10:46,442 INFO L168 Benchmark]: TraceAbstraction took 31128.83 ms. Allocated memory was 134.7 MB in the beginning and 253.8 MB in the end (delta: 119.0 MB). Free memory was 90.3 MB in the beginning and 212.0 MB in the end (delta: -121.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-20 10:10:46,446 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 0.17 ms. Allocated memory is still 134.7 MB. Free memory is still 109.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.91 ms. Allocated memory is still 134.7 MB. Free memory was 107.5 MB in the beginning and 105.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.97 ms. Allocated memory is still 134.7 MB. Free memory was 105.2 MB in the beginning and 103.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.85 ms. Allocated memory is still 134.7 MB. Free memory was 103.7 MB in the beginning and 90.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31128.83 ms. Allocated memory was 134.7 MB in the beginning and 253.8 MB in the end (delta: 119.0 MB). Free memory was 90.3 MB in the beginning and 212.0 MB in the end (delta: -121.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...