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/mcmillan2006.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-08 14:18:43,150 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-08 14:18:43,152 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-08 14:18:43,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-08 14:18:43,174 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-08 14:18:43,175 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-08 14:18:43,176 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-08 14:18:43,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-08 14:18:43,180 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-08 14:18:43,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-08 14:18:43,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-08 14:18:43,222 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 [2019-01-08 14:18:43,243 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-08 14:18:43,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-08 14:18:43,245 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-08 14:18:43,246 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-08 14:18:43,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-08 14:18:43,246 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-08 14:18:43,246 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-08 14:18:43,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-08 14:18:43,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-08 14:18:43,247 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-08 14:18:43,247 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-08 14:18:43,247 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-08 14:18:43,247 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-08 14:18:43,248 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-08 14:18:43,249 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-08 14:18:43,249 INFO L133 SettingsManager]: * Use SBE=true [2019-01-08 14:18:43,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-08 14:18:43,249 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-08 14:18:43,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-08 14:18:43,250 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-08 14:18:43,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-08 14:18:43,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-08 14:18:43,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-08 14:18:43,252 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-08 14:18:43,253 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-08 14:18:43,253 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-08 14:18:43,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-08 14:18:43,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-08 14:18:43,254 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-08 14:18:43,254 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-08 14:18:43,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-08 14:18:43,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-08 14:18:43,255 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-08 14:18:43,255 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-08 14:18:43,255 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-08 14:18:43,255 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-08 14:18:43,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-08 14:18:43,256 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-08 14:18:43,256 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-08 14:18:43,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-08 14:18:43,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-08 14:18:43,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-08 14:18:43,329 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-08 14:18:43,329 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-08 14:18:43,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/mcmillan2006.c.i_3.bpl [2019-01-08 14:18:43,331 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/mcmillan2006.c.i_3.bpl' [2019-01-08 14:18:43,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-08 14:18:43,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-08 14:18:43,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-08 14:18:43,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-08 14:18:43,396 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-08 14:18:43,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-08 14:18:43,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-08 14:18:43,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-08 14:18:43,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-08 14:18:43,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/1) ... [2019-01-08 14:18:43,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-08 14:18:43,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-08 14:18:43,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-08 14:18:43,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-08 14:18:43,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-08 14:18:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-08 14:18:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-08 14:18:43,859 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-08 14:18:43,859 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-08 14:18:43,860 INFO L202 PluginConnector]: Adding new model mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:18:43 BoogieIcfgContainer [2019-01-08 14:18:43,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-08 14:18:43,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-08 14:18:43,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-08 14:18:43,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-08 14:18:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.01 02:18:43" (1/2) ... [2019-01-08 14:18:43,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468de98 and model type mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 02:18:43, skipping insertion in model container [2019-01-08 14:18:43,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 02:18:43" (2/2) ... [2019-01-08 14:18:43,871 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.c.i_3.bpl [2019-01-08 14:18:43,882 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-08 14:18:43,891 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-08 14:18:43,909 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-08 14:18:43,943 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-08 14:18:43,943 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-08 14:18:43,944 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-08 14:18:43,944 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-08 14:18:43,944 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-08 14:18:43,944 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-08 14:18:43,944 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-08 14:18:43,944 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-08 14:18:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-08 14:18:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-08 14:18:43,967 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:18:43,968 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-08 14:18:43,970 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:18:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:18:43,977 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2019-01-08 14:18:43,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:18:44,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:18:44,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:18:44,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:18:44,031 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:18:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:18:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:18:44,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-08 14:18:44,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-08 14:18:44,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-08 14:18:44,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-08 14:18:44,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-08 14:18:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-08 14:18:44,180 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-01-08 14:18:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:18:44,216 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-01-08 14:18:44,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-08 14:18:44,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-08 14:18:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:18:44,248 INFO L225 Difference]: With dead ends: 9 [2019-01-08 14:18:44,250 INFO L226 Difference]: Without dead ends: 5 [2019-01-08 14:18:44,255 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 [2019-01-08 14:18:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-08 14:18:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-08 14:18:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-08 14:18:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-08 14:18:44,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-08 14:18:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:18:44,339 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-08 14:18:44,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-08 14:18:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-08 14:18:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-08 14:18:44,340 INFO L394 BasicCegarLoop]: Found error trace [2019-01-08 14:18:44,340 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-08 14:18:44,341 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-08 14:18:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:18:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2019-01-08 14:18:44,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-08 14:18:44,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:18:44,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:18:44,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-08 14:18:44,343 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-08 14:18:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:18:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:18:44,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:18:44,623 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-08 14:18:44,625 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-08 14:18:44,627 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [9] [2019-01-08 14:18:44,690 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-08 14:18:44,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-08 14:30:13,430 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-08 14:30:13,432 INFO L272 AbstractInterpreter]: Visited 4 different actions 36 times. Merged at 3 different actions 31 times. Widened at 2 different actions 13 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-08 14:30:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-08 14:30:13,438 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-08 14:30:13,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-08 14:30:13,438 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 [2019-01-08 14:30:13,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-08 14:30:13,454 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-08 14:30:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-08 14:30:13,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-08 14:30:13,580 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 11 treesize of output 8 [2019-01-08 14:30:13,583 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-01-08 14:30:13,584 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,590 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,599 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,599 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-01-08 14:30:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:30:13,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-08 14:30:13,650 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 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 14 treesize of output 12 [2019-01-08 14:30:13,713 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2019-01-08 14:30:13,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,716 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,718 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-08 14:30:13,718 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:5 [2019-01-08 14:30:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-08 14:30:13,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-08 14:30:13,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-01-08 14:30:13,746 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-08 14:30:13,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-08 14:30:13,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-08 14:30:13,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-08 14:30:13,749 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-01-08 14:30:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-08 14:30:13,807 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-01-08 14:30:13,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-08 14:30:13,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-01-08 14:30:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-08 14:30:13,808 INFO L225 Difference]: With dead ends: 5 [2019-01-08 14:30:13,808 INFO L226 Difference]: Without dead ends: 0 [2019-01-08 14:30:13,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-08 14:30:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-08 14:30:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-08 14:30:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-08 14:30:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-08 14:30:13,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-08 14:30:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-08 14:30:13,811 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-08 14:30:13,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-08 14:30:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-08 14:30:13,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-08 14:30:13,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-08 14:30:13,921 INFO L444 ceAbstractionStarter]: At program point L65(lines 50 66) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~7.offset 0))) (or (and (= ULTIMATE.start_main_~i~8 0) .cse0) (and .cse0 (= 0 (select (select |#memory_int| ULTIMATE.start_main_~x~7.base) 0))))) [2019-01-08 14:30:13,921 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 9 83) no Hoare annotation was computed. [2019-01-08 14:30:13,922 INFO L444 ceAbstractionStarter]: At program point L80(lines 80 81) the Hoare annotation is: false [2019-01-08 14:30:13,922 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 9 83) no Hoare annotation was computed. [2019-01-08 14:30:13,922 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 9 83) no Hoare annotation was computed. [2019-01-08 14:30:13,923 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 82) no Hoare annotation was computed. [2019-01-08 14:30:13,931 INFO L202 PluginConnector]: Adding new model mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.01 02:30:13 BoogieIcfgContainer [2019-01-08 14:30:13,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-08 14:30:13,932 INFO L168 Benchmark]: Toolchain (without parser) took 690540.39 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 MB). Free memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: -549.5 MB). Peak memory consumption was 267.9 MB. Max. memory is 7.1 GB. [2019-01-08 14:30:13,934 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. [2019-01-08 14:30:13,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-08 14:30:13,935 INFO L168 Benchmark]: Boogie Preprocessor took 35.05 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. [2019-01-08 14:30:13,936 INFO L168 Benchmark]: RCFGBuilder took 383.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-01-08 14:30:13,937 INFO L168 Benchmark]: TraceAbstraction took 690068.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -570.6 MB). Peak memory consumption was 246.7 MB. Max. memory is 7.1 GB. [2019-01-08 14:30:13,941 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 49.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.05 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 383.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 690068.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -570.6 MB). Peak memory consumption was 246.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (main_~i~8 == 0 && main_~x~7.offset == 0) || (main_~x~7.offset == 0 && 0 == #memory_int[main_~x~7.base][0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 689.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 688.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 SizeOfPredicates, 16 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...