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/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 15:59:36,848 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 15:59:36,851 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 15:59:36,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 15:59:36,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 15:59:36,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 15:59:36,875 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 15:59:36,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 15:59:36,882 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 15:59:36,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 15:59:36,887 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 15:59:36,888 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 15:59:36,889 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 15:59:36,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 15:59:36,892 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 15:59:36,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 15:59:36,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 15:59:36,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 15:59:36,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 15:59:36,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 15:59:36,901 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 15:59:36,902 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 15:59:36,905 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 15:59:36,916 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 [2018-10-23 15:59:36,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 15:59:36,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 15:59:36,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 15:59:36,949 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 15:59:36,949 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 15:59:36,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 15:59:36,950 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 15:59:36,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 15:59:36,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 15:59:36,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 15:59:36,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 15:59:36,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 15:59:36,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 15:59:36,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 15:59:36,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 15:59:36,953 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 15:59:36,953 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 15:59:36,953 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 15:59:36,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 15:59:36,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:59:36,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 15:59:36,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 15:59:36,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 15:59:36,956 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 15:59:36,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 15:59:36,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 15:59:36,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 15:59:36,957 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 15:59:36,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 15:59:37,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 15:59:37,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 15:59:37,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 15:59:37,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 15:59:37,037 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 15:59:37,037 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-10-23 15:59:37,091 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a69f6ef91/4eb136a361f347ca99f767b733c3fe9d/FLAG81aa5ed67 [2018-10-23 15:59:37,610 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 15:59:37,610 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-10-23 15:59:37,621 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a69f6ef91/4eb136a361f347ca99f767b733c3fe9d/FLAG81aa5ed67 [2018-10-23 15:59:37,640 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a69f6ef91/4eb136a361f347ca99f767b733c3fe9d [2018-10-23 15:59:37,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 15:59:37,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 15:59:37,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 15:59:37,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 15:59:37,656 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 15:59:37,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333535d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37, skipping insertion in model container [2018-10-23 15:59:37,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 15:59:37,698 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 15:59:37,869 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:59:37,881 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 15:59:37,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:59:37,919 INFO L193 MainTranslator]: Completed translation [2018-10-23 15:59:37,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37 WrapperNode [2018-10-23 15:59:37,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 15:59:37,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 15:59:37,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 15:59:37,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 15:59:37,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 15:59:37,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 15:59:37,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 15:59:37,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 15:59:37,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (1/1) ... [2018-10-23 15:59:37,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 15:59:37,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 15:59:37,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 15:59:37,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 15:59:37,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (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 [2018-10-23 15:59:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 15:59:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 15:59:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2018-10-23 15:59:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2018-10-23 15:59:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 15:59:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 15:59:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 15:59:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 15:59:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 15:59:38,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 15:59:38,509 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 15:59:38,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:59:38 BoogieIcfgContainer [2018-10-23 15:59:38,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 15:59:38,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 15:59:38,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 15:59:38,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 15:59:38,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 03:59:37" (1/3) ... [2018-10-23 15:59:38,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124850c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:59:38, skipping insertion in model container [2018-10-23 15:59:38,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:37" (2/3) ... [2018-10-23 15:59:38,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124850c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:59:38, skipping insertion in model container [2018-10-23 15:59:38,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:59:38" (3/3) ... [2018-10-23 15:59:38,518 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-10-23 15:59:38,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 15:59:38,537 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 15:59:38,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 15:59:38,591 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 15:59:38,591 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 15:59:38,592 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 15:59:38,592 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 15:59:38,592 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 15:59:38,592 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 15:59:38,592 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 15:59:38,592 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 15:59:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-23 15:59:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 15:59:38,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:59:38,622 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:59:38,624 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:59:38,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:38,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1583108737, now seen corresponding path program 1 times [2018-10-23 15:59:38,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 15:59:38,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:38,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:38,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:38,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 15:59:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:59:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:59:39,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:59:39,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 15:59:39,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 15:59:39,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 15:59:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 15:59:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-23 15:59:39,117 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2018-10-23 15:59:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:59:39,622 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-10-23 15:59:39,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 15:59:39,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-23 15:59:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:59:39,632 INFO L225 Difference]: With dead ends: 58 [2018-10-23 15:59:39,632 INFO L226 Difference]: Without dead ends: 28 [2018-10-23 15:59:39,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-23 15:59:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-23 15:59:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-10-23 15:59:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-23 15:59:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-23 15:59:39,684 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2018-10-23 15:59:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:59:39,685 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-23 15:59:39,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 15:59:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-23 15:59:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 15:59:39,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:59:39,687 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:59:39,687 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:59:39,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1693639993, now seen corresponding path program 1 times [2018-10-23 15:59:39,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 15:59:39,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:39,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:39,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:39,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 15:59:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:59:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:59:40,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:59:40,150 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 15:59:40,152 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-10-23 15:59:40,154 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [13], [15], [24], [28], [31], [33], [36], [38], [39], [40], [41], [42], [43], [45] [2018-10-23 15:59:40,205 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 15:59:40,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 15:59:41,137 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 15:59:41,139 INFO L272 AbstractInterpreter]: Visited 19 different actions 97 times. Merged at 5 different actions 37 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 31 variables. [2018-10-23 15:59:41,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:41,179 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 15:59:41,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:59:41,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 15:59:41,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:41,190 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 15:59:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:59:41,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:59:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:59:41,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 15:59:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:59:42,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-23 15:59:42,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18 [2018-10-23 15:59:42,270 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 15:59:42,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 15:59:42,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 15:59:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-10-23 15:59:42,273 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-10-23 15:59:42,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:59:42,555 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-23 15:59:42,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 15:59:42,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-10-23 15:59:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:59:42,560 INFO L225 Difference]: With dead ends: 37 [2018-10-23 15:59:42,560 INFO L226 Difference]: Without dead ends: 35 [2018-10-23 15:59:42,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-10-23 15:59:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-23 15:59:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-23 15:59:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-23 15:59:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-23 15:59:42,569 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-10-23 15:59:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:59:42,570 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-23 15:59:42,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 15:59:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-23 15:59:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-23 15:59:42,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:59:42,571 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:59:42,572 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:59:42,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:42,572 INFO L82 PathProgramCache]: Analyzing trace with hash 563486335, now seen corresponding path program 2 times [2018-10-23 15:59:42,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 15:59:42,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:42,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:42,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:42,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 15:59:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 15:59:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 15:59:42,661 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-23 15:59:42,680 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-23 15:59:42,681 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-23 15:59:42,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 03:59:42 BoogieIcfgContainer [2018-10-23 15:59:42,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 15:59:42,719 INFO L168 Benchmark]: Toolchain (without parser) took 5068.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -370.0 MB). Peak memory consumption was 345.1 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:42,721 INFO L168 Benchmark]: CDTParser took 0.28 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. [2018-10-23 15:59:42,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.31 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. [2018-10-23 15:59:42,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.15 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. [2018-10-23 15:59:42,723 INFO L168 Benchmark]: Boogie Preprocessor took 28.96 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. [2018-10-23 15:59:42,723 INFO L168 Benchmark]: RCFGBuilder took 516.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:42,724 INFO L168 Benchmark]: TraceAbstraction took 4207.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 383.8 MB). Peak memory consumption was 383.8 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:42,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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. * CACSL2BoogieTranslator took 268.31 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 43.15 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. * Boogie Preprocessor took 28.96 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 516.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4207.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 383.8 MB). Peak memory consumption was 383.8 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 * 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: [L12] Char *tmp; VAL [\old(tmp)=13, \old(tmp)=11, tmp={0:0}] [L29] CALL Char pathbuf[1 +1]; [L29] RET Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L35] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L16] Char *p; [L18] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L21] CALL *p = 1 [L21] RET *p = 1 [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L21] CALL *p = 1 [L21] RET *p = 1 [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. UNSAFE Result, 4.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 57 SDslu, 136 SDs, 0 SdLazy, 153 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 1 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, 1.7s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 8664 SizeOfPredicates, 8 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 3/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...