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/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:41:12,589 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:41:12,591 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:41:12,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 17:41:12,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 17:41:12,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 17:41:12,606 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 17:41:12,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 17:41:12,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 17:41:12,610 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 17:41:12,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 17:41:12,648 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 17:41:12,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:41:12,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:41:12,672 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:41:12,672 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:41:12,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:41:12,672 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:41:12,673 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:41:12,673 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:41:12,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:41:12,673 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:41:12,673 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:41:12,676 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:41:12,676 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:41:12,677 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:41:12,677 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:41:12,677 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:41:12,678 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:41:12,678 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:41:12,678 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:41:12,678 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:41:12,678 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:41:12,678 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:41:12,680 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:41:12,680 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:41:12,681 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:41:12,681 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:41:12,681 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:41:12,681 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:41:12,681 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:41:12,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:41:12,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:41:12,682 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:41:12,682 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:41:12,682 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:41:12,682 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:41:12,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:41:12,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:41:12,683 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:41:12,683 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:41:12,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:41:12,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:41:12,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:41:12,756 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:41:12,756 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:41:12,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl [2018-12-03 17:41:12,757 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl' [2018-12-03 17:41:12,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:41:12,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:41:12,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:41:12,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:41:12,804 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:41:12,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:41:12,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:41:12,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:41:12,842 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:41:12,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/1) ... [2018-12-03 17:41:12,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:41:12,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:41:12,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:41:12,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:41:12,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (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 17:41:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 17:41:12,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 17:41:13,196 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 17:41:13,196 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 17:41:13,197 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:41:13 BoogieIcfgContainer [2018-12-03 17:41:13,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:41:13,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:41:13,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:41:13,202 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:41:13,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:41:12" (1/2) ... [2018-12-03 17:41:13,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b913c3 and model type gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:41:13, skipping insertion in model container [2018-12-03 17:41:13,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:41:13" (2/2) ... [2018-12-03 17:41:13,206 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bpl [2018-12-03 17:41:13,217 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:41:13,226 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 17:41:13,247 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 17:41:13,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:41:13,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:41:13,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:41:13,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:41:13,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:41:13,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:41:13,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:41:13,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:41:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 17:41:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 17:41:13,313 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:41:13,314 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 17:41:13,317 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:41:13,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:41:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 17:41:13,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:41:13,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:13,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:13,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:13,390 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:41:13,421 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 17:41:13,421 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 17:41:13,421 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 17:41:13,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:13,437 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 17:41:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:41:13,479 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-03 17:41:13,481 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 17:41:13,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:41:13,482 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 17:41:13,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:13,492 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 17:41:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:41:13,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:41:13,568 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 17:41:13,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:41:13,591 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 17:41:13,613 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:41:13,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-12-03 17:41:13,613 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:41:13,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:41:13,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:41:13,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 17:41:13,632 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 17:41:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:41:13,700 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 17:41:13,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:41:13,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 17:41:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:41:13,714 INFO L225 Difference]: With dead ends: 9 [2018-12-03 17:41:13,714 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 17:41:13,718 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 17:41:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 17:41:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 17:41:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 17:41:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 17:41:13,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 17:41:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:41:13,748 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 17:41:13,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:41:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 17:41:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 17:41:13,749 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:41:13,749 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 17:41:13,750 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:41:13,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:41:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 17:41:13,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:41:13,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:13,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:13,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:13,752 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:41:13,765 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 17:41:13,765 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 17:41:13,766 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 17:41:13,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:13,779 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 17:41:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:41:13,842 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 17:41:13,845 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 17:41:13,968 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:41:13,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:41:14,739 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 17:41:14,741 INFO L272 AbstractInterpreter]: Visited 4 different actions 38 times. Merged at 3 different actions 32 times. Widened at 2 different actions 15 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 17:41:14,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:41:14,786 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 17:41:14,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:41:14,787 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 17:41:14,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:14,806 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 17:41:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:41:14,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:41:14,892 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 17:41:14,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:41:15,027 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 17:41:15,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 17:41:15,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-12-03 17:41:15,047 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 17:41:15,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 17:41:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 17:41:15,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:41:15,049 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2018-12-03 17:41:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:41:15,122 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 17:41:15,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 17:41:15,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2018-12-03 17:41:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:41:15,123 INFO L225 Difference]: With dead ends: 8 [2018-12-03 17:41:15,123 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 17:41:15,125 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:41:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 17:41:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 17:41:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 17:41:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 17:41:15,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 17:41:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:41:15,128 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 17:41:15,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 17:41:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 17:41:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 17:41:15,129 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:41:15,129 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-12-03 17:41:15,130 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:41:15,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:41:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-12-03 17:41:15,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:41:15,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:15,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:41:15,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:41:15,133 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:41:15,139 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 17:41:15,139 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 17:41:15,139 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 17:41:15,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 17:41:15,151 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 17:41:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:41:15,187 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 17:41:15,187 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 17:41:15,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:41:15,188 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 17:41:15,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 17:41:15,204 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 17:41:15,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-03 17:41:15,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 17:41:15,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:41:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:41:15,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:41:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:41:17,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 17:41:17,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-12-03 17:41:17,662 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 17:41:17,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 17:41:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 17:41:17,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=34, Unknown=3, NotChecked=0, Total=56 [2018-12-03 17:41:17,664 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2018-12-03 17:41:18,075 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-12-03 17:41:18,107 WARN L854 $PredicateComparison]: unable to prove that (and (or (= (* c_ULTIMATE.start_main_~n~5 (+ c_ULTIMATE.start_main_~n~5 1)) (* 2 c_ULTIMATE.start_main_~sum~5)) (<= c_ULTIMATE.start_main_~i~5 c_ULTIMATE.start_main_~n~5)) (forall ((ULTIMATE.start_main_~n~5 Int)) (or (= (+ (* 2 c_ULTIMATE.start_main_~i~5) (* 2 c_ULTIMATE.start_main_~sum~5)) (* ULTIMATE.start_main_~n~5 (+ ULTIMATE.start_main_~n~5 1))) (< c_ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5) (< ULTIMATE.start_main_~n~5 c_ULTIMATE.start_main_~i~5)))) is different from true [2018-12-03 17:41:18,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:41:18,110 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-03 17:41:18,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 17:41:18,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2018-12-03 17:41:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:41:18,110 INFO L225 Difference]: With dead ends: 7 [2018-12-03 17:41:18,110 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 17:41:18,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=4, NotChecked=18, Total=132 [2018-12-03 17:41:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 17:41:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 17:41:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 17:41:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 17:41:18,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-12-03 17:41:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:41:18,113 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 17:41:18,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 17:41:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 17:41:18,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 17:41:18,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 17:41:20,377 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2018-12-03 17:41:20,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 46) no Hoare annotation was computed. [2018-12-03 17:41:20,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 46) no Hoare annotation was computed. [2018-12-03 17:41:20,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 46) no Hoare annotation was computed. [2018-12-03 17:41:20,414 INFO L444 ceAbstractionStarter]: At program point L43(lines 23 43) the Hoare annotation is: (and (or (= (* ULTIMATE.start_main_~n~5 (+ ULTIMATE.start_main_~n~5 1)) (* 2 ULTIMATE.start_main_~sum~5)) (<= ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5)) (forall ((ULTIMATE.start_main_~n~5 Int)) (or (= (+ (* 2 ULTIMATE.start_main_~i~5) (* 2 ULTIMATE.start_main_~sum~5)) (* ULTIMATE.start_main_~n~5 (+ ULTIMATE.start_main_~n~5 1))) (< ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~n~5) (< ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~i~5)))) [2018-12-03 17:41:20,414 INFO L444 ceAbstractionStarter]: At program point L36(lines 36 44) the Hoare annotation is: false [2018-12-03 17:41:20,414 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 45) no Hoare annotation was computed. [2018-12-03 17:41:20,425 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:41:20 BoogieIcfgContainer [2018-12-03 17:41:20,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 17:41:20,426 INFO L168 Benchmark]: Toolchain (without parser) took 7623.91 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.3 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -682.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2018-12-03 17:41:20,427 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:41:20,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:41:20,428 INFO L168 Benchmark]: Boogie Preprocessor took 24.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:41:20,429 INFO L168 Benchmark]: RCFGBuilder took 329.77 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. [2018-12-03 17:41:20,429 INFO L168 Benchmark]: TraceAbstraction took 7226.56 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -703.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 17:41:20,433 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 37.83 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 24.96 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 329.77 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 7226.56 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -703.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: 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: 23]: Loop Invariant Derived loop invariant: (main_~n~5 * (main_~n~5 + 1) == 2 * main_~sum~5 || main_~i~5 <= main_~n~5) && (forall ULTIMATE.start_main_~n~5 : int :: (2 * main_~i~5 + 2 * main_~sum~5 == ULTIMATE.start_main_~n~5 * (ULTIMATE.start_main_~n~5 + 1) || main_~i~5 < ULTIMATE.start_main_~n~5) || ULTIMATE.start_main_~n~5 < main_~i~5) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 7.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 2.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.9s 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, 0.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 36 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 2 QuantifiedInterpolants, 524 SizeOfPredicates, 13 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...