java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:27:08,025 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:27:08,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:27:08,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 17:27:08,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 17:27:08,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 17:27:08,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 17:27:08,044 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 17:27:08,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 17:27:08,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 17:27:08,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 17:27:08,078 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 17:27:08,102 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:27:08,102 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:27:08,104 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:27:08,104 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:27:08,104 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:27:08,104 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:27:08,104 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:27:08,105 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:27:08,105 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:27:08,105 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:27:08,105 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:27:08,105 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:27:08,106 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:27:08,107 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:27:08,107 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:27:08,107 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:27:08,107 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:27:08,108 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:27:08,108 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:27:08,108 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:27:08,108 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:27:08,108 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:27:08,109 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:27:08,110 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:27:08,110 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:27:08,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:27:08,111 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:27:08,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:27:08,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:27:08,111 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:27:08,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:27:08,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:27:08,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:27:08,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:27:08,112 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:27:08,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:27:08,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:27:08,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:27:08,113 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:27:08,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:27:08,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:27:08,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:27:08,180 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:27:08,180 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:27:08,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl [2018-12-03 17:27:08,182 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl' [2018-12-03 17:27:08,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:27:08,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:27:08,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:27:08,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:27:08,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:27:08,251 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,261 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:27:08,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:27:08,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:27:08,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:27:08,288 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,288 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,289 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,289 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,295 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,300 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,301 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 05:27:08" (1/1) ... [2018-12-03 17:27:08,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:27:08,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:27:08,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:27:08,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:27:08,310 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 05:27:08" (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 17:27:08,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-12-03 17:27:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 17:27:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 17:27:08,617 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 17:27:08,617 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 17:27:08,617 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 05:27:08 BoogieIcfgContainer [2018-12-03 17:27:08,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:27:08,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:27:08,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:27:08,622 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:27:08,623 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 05:27:08" (1/2) ... [2018-12-03 17:27:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20214467 and model type gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:27:08, skipping insertion in model container [2018-12-03 17:27:08,624 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 05:27:08" (2/2) ... [2018-12-03 17:27:08,626 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2.i_4.bplTransformedIcfg_BEv2_6.bpl [2018-12-03 17:27:08,637 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:27:08,645 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 17:27:08,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 17:27:08,699 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:27:08,700 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:27:08,700 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:27:08,700 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:27:08,700 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:27:08,701 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:27:08,701 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:27:08,701 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:27:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 17:27:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 17:27:08,723 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:27:08,724 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 17:27:08,727 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:27:08,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-12-03 17:27:08,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:27:08,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:08,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:08,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:08,796 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:27:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:27:08,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:27:08,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 17:27:08,954 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:27:08,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:27:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:27:08,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:27:08,978 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 17:27:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:27:09,049 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 17:27:09,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:27:09,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 17:27:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:27:09,077 INFO L225 Difference]: With dead ends: 9 [2018-12-03 17:27:09,078 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 17:27:09,087 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 17:27:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 17:27:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 17:27:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 17:27:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 17:27:09,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 17:27:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:27:09,150 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 17:27:09,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:27:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 17:27:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 17:27:09,151 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:27:09,151 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 17:27:09,152 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:27:09,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:09,152 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-12-03 17:27:09,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:27:09,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:09,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:09,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:09,154 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:27:09,161 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 17:27:09,162 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 17:27:09,162 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 17:27:09,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:09,216 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 17:27:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:09,249 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 17:27:09,251 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 17:27:09,306 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:27:09,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:27:09,458 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-12-03 17:27:09,499 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 17:27:09,501 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Never found a fixpoint. Largest state had 0 variables. [2018-12-03 17:27:09,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:09,516 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 17:27:09,584 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-12-03 17:27:09,585 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 17:27:09,606 INFO L418 sIntCurrentIteration]: We unified 3 AI predicates to 3 [2018-12-03 17:27:09,608 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 17:27:09,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:27:09,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 17:27:09,610 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:27:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:27:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:27:09,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:27:09,613 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 3 states. [2018-12-03 17:27:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:27:09,626 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 17:27:09,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:27:09,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 17:27:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:27:09,627 INFO L225 Difference]: With dead ends: 5 [2018-12-03 17:27:09,627 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 17:27:09,628 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 3 GetRequests, 2 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 17:27:09,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 17:27:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 17:27:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 17:27:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 17:27:09,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-12-03 17:27:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:27:09,630 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 17:27:09,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:27:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 17:27:09,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 17:27:09,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 17:27:09,895 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 18 [2018-12-03 17:27:09,900 INFO L444 ceAbstractionStarter]: At program point L65(lines 65 66) the Hoare annotation is: false [2018-12-03 17:27:09,900 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 68) no Hoare annotation was computed. [2018-12-03 17:27:09,900 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 68) no Hoare annotation was computed. [2018-12-03 17:27:09,900 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 68) no Hoare annotation was computed. [2018-12-03 17:27:09,901 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 67) no Hoare annotation was computed. [2018-12-03 17:27:09,902 INFO L444 ceAbstractionStarter]: At program point L51(lines 40 52) the Hoare annotation is: (let ((.cse1 (* 2 ULTIMATE.start_gcd_test_~a)) (.cse0 (* 2 ULTIMATE.start_gcd_test_~b))) (and (= ULTIMATE.start_main_~y~7 ULTIMATE.start_gcd_test_~b) (<= .cse0 254) (not (= ULTIMATE.start_gcd_test_~a 0)) (<= 0 (+ .cse1 64768)) (<= .cse1 2) (<= 0 .cse0))) [2018-12-03 17:27:09,916 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 05:27:09 BoogieIcfgContainer [2018-12-03 17:27:09,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 17:27:09,917 INFO L168 Benchmark]: Toolchain (without parser) took 1686.10 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-12-03 17:27:09,919 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 17:27:09,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.55 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 17:27:09,923 INFO L168 Benchmark]: Boogie Preprocessor took 28.25 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 17:27:09,925 INFO L168 Benchmark]: RCFGBuilder took 314.70 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 17:27:09,926 INFO L168 Benchmark]: TraceAbstraction took 1297.69 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-12-03 17:27:09,933 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.55 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 28.25 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. * RCFGBuilder took 314.70 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1297.69 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: 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 && 2 * gcd_test_~b <= 254) && !(gcd_test_~a == 0)) && 0 <= 2 * gcd_test_~a + 64768) && 2 * gcd_test_~a <= 2) && 0 <= 2 * gcd_test_~b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 AbstIntStrong, 0.8666666666666666 AbsIntWeakeningRatio, 2.0 AbsIntAvgWeakeningVarsNumRemoved, 36.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 31 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...