java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:21:33,445 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:21:33,447 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:21:33,462 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 15:21:33,462 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 15:21:33,463 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 15:21:33,465 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 15:21:33,466 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 15:21:33,468 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 15:21:33,469 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 15:21:33,470 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 15:21:33,494 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-03 15:21:33,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:21:33,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:21:33,511 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:21:33,511 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:21:33,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:21:33,512 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:21:33,512 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:21:33,512 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:21:33,512 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:21:33,513 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:21:33,514 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:21:33,514 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:21:33,515 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:21:33,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:21:33,515 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:21:33,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:21:33,515 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:21:33,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:21:33,516 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:21:33,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:21:33,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:21:33,516 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:21:33,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:21:33,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:21:33,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:21:33,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:21:33,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:21:33,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:21:33,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:21:33,518 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:21:33,518 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:21:33,518 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:21:33,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:21:33,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:21:33,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:21:33,519 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:21:33,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:21:33,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:21:33,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:21:33,587 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:21:33,588 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:21:33,589 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl [2018-12-03 15:21:33,589 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl' [2018-12-03 15:21:33,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:21:33,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:21:33,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:21:33,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:21:33,637 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:21:33,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:21:33,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:21:33,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:21:33,673 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:21:33,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/1) ... [2018-12-03 15:21:33,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:21:33,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:21:33,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:21:33,697 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:21:33,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (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 15:21:33,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-12-03 15:21:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 15:21:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 15:21:34,028 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 15:21:34,028 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 15:21:34,029 INFO L202 PluginConnector]: Adding new model gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:21:34 BoogieIcfgContainer [2018-12-03 15:21:34,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:21:34,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:21:34,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:21:34,035 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:21:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:21:33" (1/2) ... [2018-12-03 15:21:34,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b23c447 and model type gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:21:34, skipping insertion in model container [2018-12-03 15:21:34,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:21:34" (2/2) ... [2018-12-03 15:21:34,039 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl [2018-12-03 15:21:34,051 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:21:34,063 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:21:34,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:21:34,125 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:21:34,125 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:21:34,125 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:21:34,126 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:21:34,126 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:21:34,126 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:21:34,126 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:21:34,126 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:21:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 15:21:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 15:21:34,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:21:34,150 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 15:21:34,152 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:21:34,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:21:34,159 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-12-03 15:21:34,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:21:34,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:21:34,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:21:34,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:21:34,209 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:21:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:21:34,323 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 15:21:34,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:21:34,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:21:34,326 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:21:34,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:21:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:21:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:21:34,344 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 15:21:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:21:34,402 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 15:21:34,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:21:34,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 15:21:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:21:34,414 INFO L225 Difference]: With dead ends: 9 [2018-12-03 15:21:34,414 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 15:21:34,419 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 15:21:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 15:21:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 15:21:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 15:21:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 15:21:34,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 15:21:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:21:34,454 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 15:21:34,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:21:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 15:21:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 15:21:34,455 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:21:34,455 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 15:21:34,455 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:21:34,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:21:34,456 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-12-03 15:21:34,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:21:34,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:21:34,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:21:34,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:21:34,458 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:21:34,466 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 15:21:34,466 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 15:21:34,466 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 15:21:34,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:21:34,500 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 15:21:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:21:34,569 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 15:21:34,571 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 15:21:34,628 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:21:34,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:21:34,785 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 15:21:34,787 INFO L272 AbstractInterpreter]: Visited 4 different actions 4 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 15:21:34,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:21:34,803 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 15:21:34,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:21:34,803 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 15:21:34,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:21:34,824 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 15:21:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:21:34,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 15:21:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:21:34,981 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 15:21:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:21:35,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 15:21:35,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-03 15:21:35,053 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 15:21:35,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 15:21:35,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 15:21:35,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 15:21:35,055 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-03 15:21:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:21:35,094 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 15:21:35,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 15:21:35,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 15:21:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:21:35,097 INFO L225 Difference]: With dead ends: 5 [2018-12-03 15:21:35,097 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:21:35,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 15:21:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:21:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:21:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:21:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:21:35,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 15:21:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:21:35,100 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:21:35,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 15:21:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:21:35,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:21:35,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:21:35,187 INFO L444 ceAbstractionStarter]: At program point L65(lines 65 66) the Hoare annotation is: false [2018-12-03 15:21:35,187 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 68) no Hoare annotation was computed. [2018-12-03 15:21:35,187 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 68) no Hoare annotation was computed. [2018-12-03 15:21:35,187 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 68) no Hoare annotation was computed. [2018-12-03 15:21:35,188 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 67) no Hoare annotation was computed. [2018-12-03 15:21:35,188 INFO L444 ceAbstractionStarter]: At program point L51(lines 40 52) the Hoare annotation is: (or (= ULTIMATE.start_main_~y~7 ULTIMATE.start_gcd_test_~b) (and (<= ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~y~7) (<= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~y~7))) [2018-12-03 15:21:35,197 INFO L202 PluginConnector]: Adding new model gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:21:35 BoogieIcfgContainer [2018-12-03 15:21:35,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:21:35,198 INFO L168 Benchmark]: Toolchain (without parser) took 1564.12 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-12-03 15:21:35,200 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-12-03 15:21:35,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.68 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 15:21:35,201 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 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 15:21:35,202 INFO L168 Benchmark]: RCFGBuilder took 333.01 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 15:21:35,203 INFO L168 Benchmark]: TraceAbstraction took 1166.55 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-12-03 15:21:35,207 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 0.20 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 Procedure Inliner took 35.68 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 24.03 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 333.01 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 1166.55 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 67]: 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: 65]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: main_~y~7 == gcd_test_~b || (gcd_test_~b <= main_~y~7 && gcd_test_~a <= main_~y~7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 6 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...