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_array_compound_oct_cong.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:14:14,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:14:14,326 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:14:14,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 17:14:14,341 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 17:14:14,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 17:14:14,345 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 17:14:14,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 17:14:14,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 17:14:14,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 17:14:14,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 17:14:14,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 17:14:14,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 17:14:14,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 17:14:14,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 17:14:14,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 17:14:14,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 17:14:14,359 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 17:14:14,361 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 17:14:14,363 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 17:14:14,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 17:14:14,365 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 17:14:14,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 17:14:14,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 17:14:14,368 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 17:14:14,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 17:14:14,370 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 17:14:14,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 17:14:14,371 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 17:14:14,372 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 17:14:14,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 17:14:14,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 17:14:14,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 17:14:14,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 17:14:14,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 17:14:14,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 17:14:14,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 17:14:14,388 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:14:14,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:14:14,389 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:14:14,389 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:14:14,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:14:14,390 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:14:14,390 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:14:14,390 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:14:14,390 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:14:14,391 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:14:14,391 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:14:14,391 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:14:14,391 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:14:14,392 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:14:14,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:14:14,392 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:14:14,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:14:14,393 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:14:14,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:14:14,393 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:14:14,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:14:14,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:14:14,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:14:14,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:14:14,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:14:14,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:14:14,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:14:14,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:14:14,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:14:14,396 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:14:14,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:14:14,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:14:14,397 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:14:14,397 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:14:14,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:14:14,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:14:14,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:14:14,472 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:14:14,473 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:14:14,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl [2018-12-03 17:14:14,474 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl' [2018-12-03 17:14:14,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:14:14,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:14:14,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:14:14,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:14:14,538 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:14:14,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:14:14,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:14:14,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:14:14,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:14:14,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/1) ... [2018-12-03 17:14:14,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:14:14,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:14:14,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:14:14,614 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:14:14,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (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 [2018-12-03 17:14:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure l0l1 [2018-12-03 17:14:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l1 [2018-12-03 17:14:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure l1l0 [2018-12-03 17:14:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l0 [2018-12-03 17:14:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 17:14:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 17:14:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure l0l0 [2018-12-03 17:14:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l0 [2018-12-03 17:14:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure l1l1 [2018-12-03 17:14:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l1 [2018-12-03 17:14:15,360 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 17:14:15,360 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 17:14:15,361 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:15 BoogieIcfgContainer [2018-12-03 17:14:15,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:14:15,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:14:15,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:14:15,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:14:15,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:14:14" (1/2) ... [2018-12-03 17:14:15,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755c27d1 and model type threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:14:15, skipping insertion in model container [2018-12-03 17:14:15,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:15" (2/2) ... [2018-12-03 17:14:15,370 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithProcedures.bpl [2018-12-03 17:14:15,381 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:14:15,390 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-03 17:14:15,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-03 17:14:15,443 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:14:15,443 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:14:15,443 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:14:15,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:14:15,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:14:15,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:14:15,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:14:15,444 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:14:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-03 17:14:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-03 17:14:15,472 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:14:15,473 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-03 17:14:15,476 INFO L423 AbstractCegarLoop]: === Iteration 1 === [l0l1Err0ASSERT_VIOLATIONASSERT, l1l0Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:14:15,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:14:15,483 INFO L82 PathProgramCache]: Analyzing trace with hash 441427311, now seen corresponding path program 1 times [2018-12-03 17:14:15,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:14:15,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:15,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:14:15,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:15,536 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:14:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:14:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:14:15,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:14:15,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 17:14:15,748 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:14:15,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 17:14:15,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 17:14:15,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:14:15,770 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-12-03 17:14:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:14:16,574 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2018-12-03 17:14:16,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 17:14:16,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-12-03 17:14:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:14:16,590 INFO L225 Difference]: With dead ends: 72 [2018-12-03 17:14:16,590 INFO L226 Difference]: Without dead ends: 70 [2018-12-03 17:14:16,594 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-03 17:14:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-12-03 17:14:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-12-03 17:14:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-03 17:14:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-12-03 17:14:16,647 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2018-12-03 17:14:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:14:16,648 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-12-03 17:14:16,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 17:14:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-12-03 17:14:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-03 17:14:16,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:14:16,650 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-03 17:14:16,652 INFO L423 AbstractCegarLoop]: === Iteration 2 === [l0l1Err0ASSERT_VIOLATIONASSERT, l1l0Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:14:16,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:14:16,653 INFO L82 PathProgramCache]: Analyzing trace with hash 450963827, now seen corresponding path program 1 times [2018-12-03 17:14:16,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:14:16,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:16,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:14:16,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:16,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:14:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:14:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:14:16,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:14:16,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 17:14:16,776 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:14:16,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 17:14:16,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 17:14:16,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:14:16,780 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-12-03 17:14:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:14:17,515 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-12-03 17:14:17,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 17:14:17,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-12-03 17:14:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:14:17,521 INFO L225 Difference]: With dead ends: 81 [2018-12-03 17:14:17,522 INFO L226 Difference]: Without dead ends: 79 [2018-12-03 17:14:17,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-03 17:14:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-12-03 17:14:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2018-12-03 17:14:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-03 17:14:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-12-03 17:14:17,536 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 7 [2018-12-03 17:14:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:14:17,537 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-12-03 17:14:17,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 17:14:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2018-12-03 17:14:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 17:14:17,539 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:14:17,539 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 17:14:17,539 INFO L423 AbstractCegarLoop]: === Iteration 3 === [l0l1Err0ASSERT_VIOLATIONASSERT, l1l0Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:14:17,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:14:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash -617229569, now seen corresponding path program 1 times [2018-12-03 17:14:17,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:14:17,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:17,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:14:17,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:17,542 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:14:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:14:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:14:17,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:14:17,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 17:14:17,693 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:14:17,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 17:14:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 17:14:17,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 17:14:17,694 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand 7 states. [2018-12-03 17:14:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:14:18,581 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2018-12-03 17:14:18,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 17:14:18,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-12-03 17:14:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:14:18,588 INFO L225 Difference]: With dead ends: 122 [2018-12-03 17:14:18,588 INFO L226 Difference]: Without dead ends: 120 [2018-12-03 17:14:18,589 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-12-03 17:14:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-12-03 17:14:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-12-03 17:14:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-12-03 17:14:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2018-12-03 17:14:18,607 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 10 [2018-12-03 17:14:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:14:18,608 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2018-12-03 17:14:18,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 17:14:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2018-12-03 17:14:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 17:14:18,610 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:14:18,610 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 17:14:18,610 INFO L423 AbstractCegarLoop]: === Iteration 4 === [l0l1Err0ASSERT_VIOLATIONASSERT, l1l0Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:14:18,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:14:18,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2116843270, now seen corresponding path program 1 times [2018-12-03 17:14:18,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:14:18,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:18,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:14:18,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:14:18,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:14:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:14:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:14:18,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:14:18,757 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 17:14:18,758 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-12-03 17:14:18,760 INFO L205 CegarAbsIntRunner]: [26], [27], [48], [53], [56], [59], [115], [117], [119] [2018-12-03 17:14:18,819 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:14:18,819 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:14:18,909 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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.lang.UnsupportedOperationException: Array domain does not support Call yet at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.handleCallTransition(ArrayDomainPostOperator.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:96) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$18(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.crossProductCollection(DisjunctiveAbstractState.java:513) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:345) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:243) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-03 17:14:18,913 INFO L168 Benchmark]: Toolchain (without parser) took 4377.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 169.2 MB). Peak memory consumption was 169.2 MB. Max. memory is 7.1 GB. [2018-12-03 17:14:18,916 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:14:18,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:14:18,917 INFO L168 Benchmark]: Boogie Preprocessor took 33.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:14:18,917 INFO L168 Benchmark]: RCFGBuilder took 747.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 17:14:18,919 INFO L168 Benchmark]: TraceAbstraction took 3550.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-12-03 17:14:18,925 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 747.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3550.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: Array domain does not support Call yet: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...