java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loops/array_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:23:51,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:23:51,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:23:51,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:23:51,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:23:51,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:23:51,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:23:51,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:23:51,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:23:51,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:23:51,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:23:51,925 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:23:51,926 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:23:51,927 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:23:51,928 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:23:51,937 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:23:51,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:23:51,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:23:51,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:23:51,950 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:23:51,952 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:23:51,953 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:23:51,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:23:51,964 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 12:23:51,979 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:23:51,979 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:23:51,980 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:23:51,980 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:23:51,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:23:51,981 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:23:51,981 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:23:51,981 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:23:51,981 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:23:51,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:23:51,982 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:23:51,982 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:23:51,982 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:23:51,982 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:23:51,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:23:51,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:23:51,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:23:51,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:23:51,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:23:51,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:23:51,986 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:23:51,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:23:51,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:23:51,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:23:51,987 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:23:51,987 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:23:51,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:23:51,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:23:51,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:23:51,988 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:23:51,988 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:23:52,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:23:52,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:23:52,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:23:52,083 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:23:52,083 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:23:52,084 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/array_false-unreach-call_true-termination.i [2018-10-24 12:23:52,156 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8aa29a4ec/831c378cdd714e749c91161ab3046165/FLAGede735cb0 [2018-10-24 12:23:52,665 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:23:52,666 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array_false-unreach-call_true-termination.i [2018-10-24 12:23:52,673 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8aa29a4ec/831c378cdd714e749c91161ab3046165/FLAGede735cb0 [2018-10-24 12:23:52,693 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8aa29a4ec/831c378cdd714e749c91161ab3046165 [2018-10-24 12:23:52,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:23:52,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:23:52,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:23:52,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:23:52,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:23:52,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:23:52" (1/1) ... [2018-10-24 12:23:52,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:52, skipping insertion in model container [2018-10-24 12:23:52,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:23:52" (1/1) ... [2018-10-24 12:23:52,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:23:52,748 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:23:52,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:23:52,961 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:23:52,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:23:53,006 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:23:53,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53 WrapperNode [2018-10-24 12:23:53,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:23:53,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:23:53,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:23:53,008 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:23:53,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:23:53,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:23:53,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:23:53,054 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:23:53,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... [2018-10-24 12:23:53,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:23:53,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:23:53,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:23:53,083 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:23:53,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:23:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:23:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:23:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:23:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:23:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:23:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:23:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:23:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:23:53,664 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:23:53,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:23:53 BoogieIcfgContainer [2018-10-24 12:23:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:23:53,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:23:53,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:23:53,669 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:23:53,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:23:52" (1/3) ... [2018-10-24 12:23:53,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9a0850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:23:53, skipping insertion in model container [2018-10-24 12:23:53,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:53" (2/3) ... [2018-10-24 12:23:53,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9a0850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:23:53, skipping insertion in model container [2018-10-24 12:23:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:23:53" (3/3) ... [2018-10-24 12:23:53,673 INFO L112 eAbstractionObserver]: Analyzing ICFG array_false-unreach-call_true-termination.i [2018-10-24 12:23:53,688 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:23:53,696 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:23:53,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:23:53,747 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:23:53,748 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:23:53,748 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:23:53,748 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:23:53,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:23:53,748 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:23:53,748 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:23:53,749 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:23:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-24 12:23:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:23:53,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:23:53,775 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:23:53,777 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:23:53,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:23:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 296275345, now seen corresponding path program 1 times [2018-10-24 12:23:53,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:23:53,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:53,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:23:53,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:53,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:23:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:23:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:23:53,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:23:53,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:23:53,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:23:53,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:23:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:23:53,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:23:53,954 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-10-24 12:23:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:23:53,976 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-10-24 12:23:53,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:23:53,978 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-24 12:23:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:23:53,987 INFO L225 Difference]: With dead ends: 36 [2018-10-24 12:23:53,987 INFO L226 Difference]: Without dead ends: 16 [2018-10-24 12:23:53,991 INFO L605 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 [2018-10-24 12:23:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-24 12:23:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-24 12:23:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-24 12:23:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-10-24 12:23:54,033 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2018-10-24 12:23:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:23:54,033 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-10-24 12:23:54,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:23:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-10-24 12:23:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 12:23:54,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:23:54,035 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:23:54,036 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:23:54,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:23:54,037 INFO L82 PathProgramCache]: Analyzing trace with hash 665169549, now seen corresponding path program 1 times [2018-10-24 12:23:54,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:23:54,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:54,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:23:54,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:54,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:23:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:23:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:23:54,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:23:54,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 12:23:54,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:23:54,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 12:23:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 12:23:54,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 12:23:54,236 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-10-24 12:23:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:23:54,324 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-10-24 12:23:54,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 12:23:54,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-24 12:23:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:23:54,326 INFO L225 Difference]: With dead ends: 26 [2018-10-24 12:23:54,327 INFO L226 Difference]: Without dead ends: 20 [2018-10-24 12:23:54,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 12:23:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-24 12:23:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-10-24 12:23:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-24 12:23:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-24 12:23:54,334 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-10-24 12:23:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:23:54,334 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-24 12:23:54,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 12:23:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-24 12:23:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 12:23:54,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:23:54,336 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:23:54,336 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:23:54,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:23:54,336 INFO L82 PathProgramCache]: Analyzing trace with hash 361632356, now seen corresponding path program 1 times [2018-10-24 12:23:54,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:23:54,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:54,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:23:54,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:23:54,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:23:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:23:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:23:54,472 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:23:54,487 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,488 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,489 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,489 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,491 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,491 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,494 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-24 12:23:54,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:23:54 BoogieIcfgContainer [2018-10-24 12:23:54,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:23:54,514 INFO L168 Benchmark]: Toolchain (without parser) took 1809.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -723.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2018-10-24 12:23:54,516 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 12:23:54,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.93 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. [2018-10-24 12:23:54,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.83 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. [2018-10-24 12:23:54,519 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 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. [2018-10-24 12:23:54,519 INFO L168 Benchmark]: RCFGBuilder took 582.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:23:54,520 INFO L168 Benchmark]: TraceAbstraction took 847.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:23:54,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 300.93 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 44.83 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 29.15 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 582.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 847.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] CALL int array[SIZE], menor; [L15] RET int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE jmenor) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...