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_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:20:08,532 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:20:08,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:20:08,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 19:20:08,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 19:20:08,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 19:20:08,552 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 19:20:08,555 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 19:20:08,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 19:20:08,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 19:20:08,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 19:20:08,562 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 19:20:08,563 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 19:20:08,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 19:20:08,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 19:20:08,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 19:20:08,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 19:20:08,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 19:20:08,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 19:20:08,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 19:20:08,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 19:20:08,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 19:20:08,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 19:20:08,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 19:20:08,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 19:20:08,589 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 19:20:08,590 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 19:20:08,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 19:20:08,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 19:20:08,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 19:20:08,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 19:20:08,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 19:20:08,594 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 19:20:08,594 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 19:20:08,595 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 19:20:08,596 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 19:20:08,596 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-03 19:20:08,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:20:08,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:20:08,611 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:20:08,612 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:20:08,612 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:20:08,612 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:20:08,612 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:20:08,613 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:20:08,613 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:20:08,613 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:20:08,613 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:20:08,613 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:20:08,613 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:20:08,614 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:20:08,615 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:20:08,615 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:20:08,615 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:20:08,615 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:20:08,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:20:08,619 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:20:08,619 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:20:08,619 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:20:08,619 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:20:08,620 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:20:08,620 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:20:08,620 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:20:08,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:20:08,620 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:20:08,621 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:20:08,622 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:20:08,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:20:08,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:20:08,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:20:08,701 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:20:08,702 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:20:08,703 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-12-03 19:20:08,703 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl' [2018-12-03 19:20:08,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:20:08,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:20:08,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:20:08,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:20:08,790 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:20:08,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:20:08,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:20:08,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:20:08,832 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:20:08,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/1) ... [2018-12-03 19:20:08,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:20:08,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:20:08,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:20:08,878 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:20:08,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (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 19:20:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 19:20:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 19:20:09,752 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 19:20:09,752 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 19:20:09,753 INFO L202 PluginConnector]: Adding new model s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:20:09 BoogieIcfgContainer [2018-12-03 19:20:09,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:20:09,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:20:09,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:20:09,759 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:20:09,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:20:08" (1/2) ... [2018-12-03 19:20:09,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c15ee17 and model type s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:20:09, skipping insertion in model container [2018-12-03 19:20:09,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:20:09" (2/2) ... [2018-12-03 19:20:09,763 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-12-03 19:20:09,774 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:20:09,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:20:09,808 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:20:09,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:20:09,851 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:20:09,851 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:20:09,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:20:09,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:20:09,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:20:09,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:20:09,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:20:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-12-03 19:20:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 19:20:09,886 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:20:09,887 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:20:09,891 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:20:09,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:20:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash -839018561, now seen corresponding path program 1 times [2018-12-03 19:20:09,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:20:09,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:09,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:20:09,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:09,963 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:20:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:20:10,148 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 19:20:10,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:20:10,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:20:10,151 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:20:10,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:20:10,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:20:10,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:20:10,173 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2018-12-03 19:20:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:20:10,437 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2018-12-03 19:20:10,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:20:10,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-03 19:20:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:20:10,452 INFO L225 Difference]: With dead ends: 39 [2018-12-03 19:20:10,453 INFO L226 Difference]: Without dead ends: 25 [2018-12-03 19:20:10,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:20:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-03 19:20:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-03 19:20:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-03 19:20:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 40 transitions. [2018-12-03 19:20:10,504 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 40 transitions. Word has length 11 [2018-12-03 19:20:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:20:10,504 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 40 transitions. [2018-12-03 19:20:10,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:20:10,505 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 40 transitions. [2018-12-03 19:20:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 19:20:10,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:20:10,506 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:20:10,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:20:10,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:20:10,507 INFO L82 PathProgramCache]: Analyzing trace with hash -447746379, now seen corresponding path program 1 times [2018-12-03 19:20:10,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:20:10,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:10,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:20:10,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:10,509 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:20:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:20:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:20:10,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:20:10,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:20:10,648 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:20:10,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:20:10,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:20:10,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:20:10,652 INFO L87 Difference]: Start difference. First operand 25 states and 40 transitions. Second operand 3 states. [2018-12-03 19:20:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:20:10,961 INFO L93 Difference]: Finished difference Result 57 states and 93 transitions. [2018-12-03 19:20:10,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:20:10,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-03 19:20:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:20:10,965 INFO L225 Difference]: With dead ends: 57 [2018-12-03 19:20:10,965 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 19:20:10,967 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:20:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 19:20:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-03 19:20:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 19:20:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 53 transitions. [2018-12-03 19:20:10,986 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 53 transitions. Word has length 19 [2018-12-03 19:20:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:20:10,986 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 53 transitions. [2018-12-03 19:20:10,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:20:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 53 transitions. [2018-12-03 19:20:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 19:20:10,990 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:20:10,990 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:20:10,990 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:20:10,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:20:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash -180362168, now seen corresponding path program 1 times [2018-12-03 19:20:10,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:20:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:10,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:20:10,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:20:10,997 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:20:11,024 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 19:20:11,024 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 19:20:11,025 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 19:20:11,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:20:11,043 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 19:20:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:20:11,123 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-12-03 19:20:11,128 INFO L205 CegarAbsIntRunner]: [0], [2], [8], [10], [16], [22], [28], [34], [40], [46], [50], [52], [56], [60], [63] [2018-12-03 19:20:11,219 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 19:20:11,219 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 19:20:12,421 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:240) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.Boogie2SmtSymbolTableTmpVars.getBoogieVar(Boogie2SmtSymbolTableTmpVars.java:112) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.ExpressionTransformer.toAffineExpr(ExpressionTransformer.java:167) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.ExpressionTransformer.affineExprCached(ExpressionTransformer.java:99) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processNumericRelationWithoutIfs(OctAssumeProcessor.java:334) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processNumericRelation(OctAssumeProcessor.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processBooleanOperations(OctAssumeProcessor.java:168) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.assume(OctAssumeProcessor.java:98) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctStatementProcessor.processStatement(OctStatementProcessor.java:68) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctPostOperator.apply(OctPostOperator.java:202) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctPostOperator.apply(OctPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainToolkit.handleStatementBySubdomain(ArrayDomainToolkit.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainToolkit.handleAssumptionBySubdomain(ArrayDomainToolkit.java:148) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainExpressionProcessor.processAssume(ArrayDomainExpressionProcessor.java:89) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainStatementProcessor.processAssume(ArrayDomainStatementProcessor.java:62) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainStatementProcessor.process(ArrayDomainStatementProcessor.java:45) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.handleInternalTransition(ArrayDomainPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:70) 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$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) 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) 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) [2018-12-03 19:20:12,428 INFO L168 Benchmark]: Toolchain (without parser) took 3640.78 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 58.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -3.8 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. [2018-12-03 19:20:12,433 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 19:20:12,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 19:20:12,436 INFO L168 Benchmark]: Boogie Preprocessor took 44.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 19:20:12,436 INFO L168 Benchmark]: RCFGBuilder took 876.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-12-03 19:20:12,440 INFO L168 Benchmark]: TraceAbstraction took 2672.73 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 58.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -35.5 MB). Peak memory consumption was 458.4 MB. Max. memory is 7.1 GB. [2018-12-03 19:20:12,448 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 876.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2672.73 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 58.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -35.5 MB). Peak memory consumption was 458.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info: de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...