java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:41:20,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:41:20,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:41:20,897 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:41:20,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:41:20,899 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:41:20,902 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:41:20,904 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:41:20,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:41:20,909 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:41:20,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:41:20,911 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:41:20,912 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:41:20,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:41:20,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:41:20,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:41:20,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:41:20,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:41:20,930 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:41:20,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:41:20,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:41:20,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:41:20,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-12 20:41:20,958 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:41:20,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:41:20,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:41:20,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:41:20,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:41:20,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:41:20,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:41:20,976 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:41:20,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:41:20,977 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:41:20,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:41:20,977 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:41:20,977 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:41:20,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:41:20,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:41:20,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:41:20,978 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:41:20,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:41:20,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:41:20,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:41:20,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:41:20,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:41:20,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:41:20,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:41:20,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:41:20,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:41:20,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:41:20,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:41:20,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:41:20,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:41:20,981 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:41:20,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:41:20,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:41:20,982 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:41:20,982 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:41:20,982 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:41:21,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:41:21,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:41:21,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:41:21,044 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:41:21,044 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:41:21,045 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-12 20:41:21,107 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746094e/35c268353d574f22b2a9888600ce11ee/FLAGe50b8d494 [2018-11-12 20:41:21,550 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:41:21,550 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-12 20:41:21,556 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746094e/35c268353d574f22b2a9888600ce11ee/FLAGe50b8d494 [2018-11-12 20:41:21,572 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746094e/35c268353d574f22b2a9888600ce11ee [2018-11-12 20:41:21,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:41:21,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:41:21,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:21,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:41:21,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:41:21,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257fec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21, skipping insertion in model container [2018-11-12 20:41:21,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:41:21,630 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:41:21,828 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:21,832 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:41:21,852 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:21,867 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:41:21,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21 WrapperNode [2018-11-12 20:41:21,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:21,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:21,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:41:21,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:41:21,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:21,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:41:21,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:41:21,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:41:21,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (1/1) ... [2018-11-12 20:41:21,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:41:21,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:41:21,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:41:21,924 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:41:21,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (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 [2018-11-12 20:41:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:41:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:41:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:41:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:41:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:41:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:41:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:41:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:41:22,324 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:41:22,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:22 BoogieIcfgContainer [2018-11-12 20:41:22,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:41:22,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:41:22,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:41:22,330 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:41:22,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:21" (1/3) ... [2018-11-12 20:41:22,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70169f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:22, skipping insertion in model container [2018-11-12 20:41:22,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:21" (2/3) ... [2018-11-12 20:41:22,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70169f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:22, skipping insertion in model container [2018-11-12 20:41:22,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:22" (3/3) ... [2018-11-12 20:41:22,333 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-11-12 20:41:22,345 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:41:22,353 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:41:22,372 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:41:22,419 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:41:22,419 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:41:22,419 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:41:22,419 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:41:22,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:41:22,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:41:22,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:41:22,420 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:41:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-12 20:41:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-12 20:41:22,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:22,450 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:22,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:22,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1421497933, now seen corresponding path program 1 times [2018-11-12 20:41:22,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:22,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:22,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:22,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:22,508 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:22,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:22,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:41:22,572 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:22,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:41:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:41:22,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:41:22,591 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-12 20:41:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:22,612 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-12 20:41:22,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:41:22,613 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-12 20:41:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:22,622 INFO L225 Difference]: With dead ends: 34 [2018-11-12 20:41:22,622 INFO L226 Difference]: Without dead ends: 15 [2018-11-12 20:41:22,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:41:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-12 20:41:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-12 20:41:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-12 20:41:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-12 20:41:22,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-11-12 20:41:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:22,669 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-12 20:41:22,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:41:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-12 20:41:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:41:22,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:22,671 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:22,671 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:22,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385422, now seen corresponding path program 1 times [2018-11-12 20:41:22,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:22,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:22,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:22,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:22,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:22,906 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-12 20:41:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:23,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:23,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 20:41:23,155 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:23,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 20:41:23,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 20:41:23,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-12 20:41:23,158 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-11-12 20:41:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:23,427 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-12 20:41:23,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 20:41:23,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-12 20:41:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:23,430 INFO L225 Difference]: With dead ends: 23 [2018-11-12 20:41:23,431 INFO L226 Difference]: Without dead ends: 18 [2018-11-12 20:41:23,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 20:41:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-12 20:41:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-12 20:41:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-12 20:41:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-12 20:41:23,442 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-11-12 20:41:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:23,443 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-12 20:41:23,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 20:41:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-12 20:41:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 20:41:23,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:23,444 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:23,444 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:23,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1592010396, now seen corresponding path program 1 times [2018-11-12 20:41:23,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:23,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:23,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:23,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:23,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:23,739 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-11-12 20:41:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:23,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:23,991 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:23,992 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-12 20:41:23,994 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [25], [32], [35], [37], [43], [44], [45], [47] [2018-11-12 20:41:24,026 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:24,026 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:24,452 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:24,454 INFO L272 AbstractInterpreter]: Visited 15 different actions 78 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Performed 282 root evaluator evaluations with a maximum evaluation depth of 5. Performed 282 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-12 20:41:24,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:24,475 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:24,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:24,476 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:41:24,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:24,492 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:24,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:25,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:25,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:25,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2018-11-12 20:41:25,408 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:25,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-12 20:41:25,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-12 20:41:25,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-11-12 20:41:25,411 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-11-12 20:41:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:25,831 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-11-12 20:41:25,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 20:41:25,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-11-12 20:41:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:25,832 INFO L225 Difference]: With dead ends: 32 [2018-11-12 20:41:25,833 INFO L226 Difference]: Without dead ends: 26 [2018-11-12 20:41:25,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-11-12 20:41:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-12 20:41:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-12 20:41:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-12 20:41:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-12 20:41:25,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-11-12 20:41:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:25,840 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-12 20:41:25,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-12 20:41:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-12 20:41:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-12 20:41:25,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:25,841 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:25,841 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:25,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2103962116, now seen corresponding path program 1 times [2018-11-12 20:41:25,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:25,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:25,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:25,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 20:41:26,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:26,147 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:26,148 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-12 20:41:26,148 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [23], [25], [32], [35], [37], [43], [44], [45], [47] [2018-11-12 20:41:26,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:26,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:26,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:26,375 INFO L272 AbstractInterpreter]: Visited 16 different actions 112 times. Merged at 6 different actions 51 times. Widened at 1 different actions 3 times. Performed 492 root evaluator evaluations with a maximum evaluation depth of 5. Performed 492 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 11 fixpoints after 3 different actions. Largest state had 6 variables. [2018-11-12 20:41:26,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:26,417 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:26,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:26,417 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 [2018-11-12 20:41:26,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:26,430 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:26,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:26,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 20:41:27,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:27,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 22 [2018-11-12 20:41:27,253 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:27,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 20:41:27,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 20:41:27,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2018-11-12 20:41:27,255 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 17 states. [2018-11-12 20:41:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:27,950 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-12 20:41:27,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 20:41:27,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-11-12 20:41:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:27,951 INFO L225 Difference]: With dead ends: 34 [2018-11-12 20:41:27,952 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:41:27,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 20:41:27,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:41:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:41:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:41:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:41:27,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-12 20:41:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:27,954 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:41:27,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 20:41:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:41:27,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:41:27,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:41:28,071 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-12 20:41:28,071 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:28,071 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:28,071 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:41:28,071 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:41:28,071 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-12 20:41:28,072 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 23) no Hoare annotation was computed. [2018-11-12 20:41:28,073 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 (* 3 main_~n~0)))) [2018-11-12 20:41:28,073 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-12 20:41:28,073 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-12 20:41:28,073 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-12 20:41:28,073 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:28,073 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-12 20:41:28,073 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-12 20:41:28,073 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:28,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:41:28 BoogieIcfgContainer [2018-11-12 20:41:28,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:41:28,088 INFO L168 Benchmark]: Toolchain (without parser) took 6501.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -461.4 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:28,089 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-12 20:41:28,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.16 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:28,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.41 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. [2018-11-12 20:41:28,092 INFO L168 Benchmark]: Boogie Preprocessor took 29.04 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. [2018-11-12 20:41:28,092 INFO L168 Benchmark]: RCFGBuilder took 401.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:28,094 INFO L168 Benchmark]: TraceAbstraction took 5760.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 320.0 MB). Peak memory consumption was 320.0 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:28,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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. * CACSL2BoogieTranslator took 280.16 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.41 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 29.04 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 401.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5760.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 320.0 MB). Peak memory consumption was 320.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (a + b <= 3 * i && 3 * i <= a + b) && a + b <= 3 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 25 SDslu, 182 SDs, 0 SdLazy, 272 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 18682 SizeOfPredicates, 8 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...