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.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 16:05:36,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 16:05:36,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 16:05:36,837 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 16:05:36,837 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 16:05:36,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 16:05:36,840 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 16:05:36,842 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 16:05:36,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 16:05:36,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 16:05:36,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 16:05:36,846 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 16:05:36,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 16:05:36,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 16:05:36,849 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 16:05:36,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 16:05:36,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 16:05:36,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 16:05:36,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 16:05:36,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 16:05:36,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 16:05:36,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 16:05:36,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 16:05:36,873 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-22 16:05:36,890 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 16:05:36,890 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 16:05:36,891 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 16:05:36,892 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 16:05:36,892 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 16:05:36,892 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 16:05:36,892 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 16:05:36,893 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 16:05:36,897 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 16:05:36,897 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 16:05:36,897 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 16:05:36,898 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 16:05:36,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 16:05:36,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 16:05:36,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 16:05:36,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 16:05:36,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 16:05:36,899 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 16:05:36,900 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 16:05:36,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 16:05:36,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 16:05:36,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 16:05:36,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 16:05:36,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 16:05:36,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:05:36,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 16:05:36,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 16:05:36,904 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 16:05:36,904 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 16:05:36,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 16:05:36,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 16:05:36,905 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 16:05:36,905 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 16:05:36,905 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 16:05:36,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 16:05:36,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 16:05:36,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 16:05:36,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 16:05:36,985 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 16:05:36,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-22 16:05:37,062 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/981652c09/8931e947b9bf4b6eb47d21101a1451c6/FLAGcae47f743 [2018-10-22 16:05:37,560 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 16:05:37,561 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-22 16:05:37,567 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/981652c09/8931e947b9bf4b6eb47d21101a1451c6/FLAGcae47f743 [2018-10-22 16:05:37,583 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/981652c09/8931e947b9bf4b6eb47d21101a1451c6 [2018-10-22 16:05:37,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 16:05:37,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 16:05:37,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 16:05:37,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 16:05:37,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 16:05:37,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8a506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37, skipping insertion in model container [2018-10-22 16:05:37,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 16:05:37,634 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 16:05:37,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:05:37,829 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 16:05:37,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:05:37,871 INFO L193 MainTranslator]: Completed translation [2018-10-22 16:05:37,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37 WrapperNode [2018-10-22 16:05:37,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 16:05:37,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 16:05:37,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 16:05:37,873 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 16:05:37,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 16:05:37,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 16:05:37,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 16:05:37,893 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 16:05:37,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (1/1) ... [2018-10-22 16:05:37,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 16:05:37,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 16:05:37,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 16:05:37,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 16:05:37,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (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 [2018-10-22 16:05:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 16:05:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 16:05:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 16:05:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 16:05:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 16:05:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 16:05:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 16:05:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 16:05:38,359 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 16:05:38,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:05:38 BoogieIcfgContainer [2018-10-22 16:05:38,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 16:05:38,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 16:05:38,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 16:05:38,371 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 16:05:38,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 04:05:37" (1/3) ... [2018-10-22 16:05:38,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:05:38, skipping insertion in model container [2018-10-22 16:05:38,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:05:37" (2/3) ... [2018-10-22 16:05:38,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:05:38, skipping insertion in model container [2018-10-22 16:05:38,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:05:38" (3/3) ... [2018-10-22 16:05:38,376 INFO L112 eAbstractionObserver]: Analyzing ICFG id_trans_false-unreach-call_true-termination.i [2018-10-22 16:05:38,389 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 16:05:38,398 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 16:05:38,412 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 16:05:38,440 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 16:05:38,441 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 16:05:38,441 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 16:05:38,441 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 16:05:38,441 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 16:05:38,442 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 16:05:38,442 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 16:05:38,442 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 16:05:38,442 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 16:05:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-22 16:05:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 16:05:38,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:05:38,468 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:05:38,471 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:05:38,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:05:38,477 INFO L82 PathProgramCache]: Analyzing trace with hash -243865802, now seen corresponding path program 1 times [2018-10-22 16:05:38,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:05:38,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:38,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:05:38,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:38,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:05:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:05:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:05:38,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:05:38,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 16:05:38,717 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:05:38,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 16:05:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 16:05:38,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:05:38,737 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-10-22 16:05:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:05:38,933 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-10-22 16:05:38,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 16:05:38,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-22 16:05:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:05:38,945 INFO L225 Difference]: With dead ends: 48 [2018-10-22 16:05:38,946 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 16:05:38,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 16:05:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 16:05:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-22 16:05:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 16:05:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-22 16:05:38,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2018-10-22 16:05:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:05:38,991 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-22 16:05:38,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 16:05:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-22 16:05:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-22 16:05:38,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:05:38,994 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:05:38,995 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:05:38,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:05:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash 662571400, now seen corresponding path program 1 times [2018-10-22 16:05:38,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:05:38,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:38,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:05:38,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:38,999 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:05:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:05:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:05:39,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 16:05:39,274 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 16:05:39,275 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-10-22 16:05:39,277 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [17], [29], [32], [34], [37], [39], [40], [41], [42], [44], [45], [46] [2018-10-22 16:05:39,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 16:05:39,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 16:05:39,483 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-22 16:05:39,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 16:05:39,544 INFO L272 AbstractInterpreter]: Visited 15 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-10-22 16:05:39,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:05:39,549 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 16:05:39,668 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 56.25% of their original sizes. [2018-10-22 16:05:39,668 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 16:05:39,964 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 16:05:39,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 16:05:39,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-10-22 16:05:39,966 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:05:39,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 16:05:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 16:05:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 16:05:39,968 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2018-10-22 16:05:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:05:40,982 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-10-22 16:05:40,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 16:05:40,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-10-22 16:05:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:05:40,984 INFO L225 Difference]: With dead ends: 40 [2018-10-22 16:05:40,984 INFO L226 Difference]: Without dead ends: 38 [2018-10-22 16:05:40,986 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-22 16:05:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-22 16:05:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-10-22 16:05:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-22 16:05:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-10-22 16:05:41,008 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 17 [2018-10-22 16:05:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:05:41,009 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-10-22 16:05:41,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 16:05:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-10-22 16:05:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 16:05:41,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:05:41,010 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:05:41,012 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:05:41,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:05:41,013 INFO L82 PathProgramCache]: Analyzing trace with hash -366649848, now seen corresponding path program 1 times [2018-10-22 16:05:41,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:05:41,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:41,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:05:41,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:05:41,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:05:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 16:05:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 16:05:41,084 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 16:05:41,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 04:05:41 BoogieIcfgContainer [2018-10-22 16:05:41,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 16:05:41,106 INFO L168 Benchmark]: Toolchain (without parser) took 3511.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -669.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2018-10-22 16:05:41,108 INFO L168 Benchmark]: CDTParser took 0.29 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. [2018-10-22 16:05:41,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.32 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. [2018-10-22 16:05:41,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.46 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. [2018-10-22 16:05:41,111 INFO L168 Benchmark]: Boogie Preprocessor took 25.40 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. [2018-10-22 16:05:41,111 INFO L168 Benchmark]: RCFGBuilder took 442.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 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 26.8 MB. Max. memory is 7.1 GB. [2018-10-22 16:05:41,112 INFO L168 Benchmark]: TraceAbstraction took 2740.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 112.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. [2018-10-22 16:05:41,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 276.32 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 19.46 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 25.40 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 442.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 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 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2740.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 112.4 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. * 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: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] __VERIFIER_assert( 0 <= j) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] __VERIFIER_assert( j < material_length ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) 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, 24 locations, 1 error locations. UNSAFE Result, 2.6s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 20 SDslu, 125 SDs, 0 SdLazy, 31 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9140625 AbsIntWeakeningRatio, 0.625 AbsIntAvgWeakeningVarsNumRemoved, 6.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 903 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...