java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:30:43,962 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:30:43,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:30:43,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:30:43,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:30:43,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:30:43,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:30:43,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:30:43,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:30:43,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:30:43,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:30:43,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:30:43,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:30:43,989 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:30:43,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:30:43,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:30:44,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:30:44,033 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:30:44,034 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:30:44,035 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:30:44,037 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:30:44,043 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-21 00:30:44,053 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:30:44,053 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:30:44,054 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:30:44,054 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:30:44,055 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:30:44,055 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:30:44,055 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:30:44,055 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:30:44,056 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:30:44,056 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:30:44,056 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:30:44,056 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:30:44,057 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:30:44,058 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:30:44,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:30:44,058 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:30:44,058 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:30:44,058 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:30:44,058 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:30:44,059 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:30:44,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:30:44,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:30:44,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:30:44,059 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:30:44,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:30:44,061 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:30:44,061 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:30:44,062 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:30:44,062 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:30:44,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:30:44,106 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:30:44,109 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:30:44,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:30:44,111 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:30:44,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:44,273 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:30:44,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:30:44,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:44,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:30:44,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:30:44,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533d743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44, skipping insertion in model container [2018-01-21 00:30:44,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,302 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:44,340 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:44,459 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:44,474 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:44,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44 WrapperNode [2018-01-21 00:30:44,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:44,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:30:44,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:30:44,482 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:30:44,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... [2018-01-21 00:30:44,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:30:44,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:30:44,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:30:44,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:30:44,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:30:44,560 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:30:44,560 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:30:44,560 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 00:30:44,560 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:30:44,560 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 00:30:44,561 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:30:44,562 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:30:44,562 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:30:44,779 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:30:44,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:44 BoogieIcfgContainer [2018-01-21 00:30:44,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:30:44,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:30:44,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:30:44,783 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:30:44,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:30:44" (1/3) ... [2018-01-21 00:30:44,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d41076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:44, skipping insertion in model container [2018-01-21 00:30:44,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:44" (2/3) ... [2018-01-21 00:30:44,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d41076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:44, skipping insertion in model container [2018-01-21 00:30:44,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:44" (3/3) ... [2018-01-21 00:30:44,787 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:44,793 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:30:44,800 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 00:30:44,837 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:44,838 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:44,838 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:44,838 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:44,838 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:44,838 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:44,838 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:44,838 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 00:30:44,839 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 00:30:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 00:30:44,862 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:44,863 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:44,863 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 00:30:44,866 INFO L82 PathProgramCache]: Analyzing trace with hash 928514088, now seen corresponding path program 1 times [2018-01-21 00:30:44,869 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:44,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:44,912 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:44,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:44,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:44,977 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:45,028 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:45,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 00:30:45,029 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:45,032 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:30:45,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:30:45,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:45,049 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-01-21 00:30:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:45,149 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-01-21 00:30:45,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:30:45,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 00:30:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:45,158 INFO L225 Difference]: With dead ends: 57 [2018-01-21 00:30:45,158 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:45,161 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:45,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 00:30:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:45,181 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:45,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:30:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:45,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:45,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 00:30:45,205 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 552) no Hoare annotation was computed. [2018-01-21 00:30:45,205 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 540 555) the Hoare annotation is: true [2018-01-21 00:30:45,205 INFO L401 ceAbstractionStarter]: For program point L543(lines 543 553) no Hoare annotation was computed. [2018-01-21 00:30:45,205 INFO L401 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-21 00:30:45,205 INFO L401 ceAbstractionStarter]: For program point L548(lines 548 549) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point L547(line 547) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 540 555) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point L546'(lines 546 552) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point L548'(lines 548 549) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 540 555) no Hoare annotation was computed. [2018-01-21 00:30:45,206 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 540 555) no Hoare annotation was computed. [2018-01-21 00:30:45,207 INFO L401 ceAbstractionStarter]: For program point L543'(lines 543 553) no Hoare annotation was computed. [2018-01-21 00:30:45,207 INFO L404 ceAbstractionStarter]: At program point L548'''(lines 548 549) the Hoare annotation is: true [2018-01-21 00:30:45,207 INFO L401 ceAbstractionStarter]: For program point L547'(line 547) no Hoare annotation was computed. [2018-01-21 00:30:45,207 INFO L404 ceAbstractionStarter]: At program point L546'''(lines 546 552) the Hoare annotation is: true [2018-01-21 00:30:45,207 INFO L401 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-21 00:30:45,207 INFO L401 ceAbstractionStarter]: For program point L547''(line 547) no Hoare annotation was computed. [2018-01-21 00:30:45,208 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,208 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,208 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 00:30:45,208 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,208 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 00:30:45,208 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 570) the Hoare annotation is: true [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point L568(line 568) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point L566(line 566) no Hoare annotation was computed. [2018-01-21 00:30:45,209 INFO L401 ceAbstractionStarter]: For program point L565(line 565) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point L559''(lines 559 561) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point L566'(line 566) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 556 570) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point L566'''(line 566) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point L562'(lines 562 564) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 556 570) no Hoare annotation was computed. [2018-01-21 00:30:45,210 INFO L401 ceAbstractionStarter]: For program point L559(lines 559 561) no Hoare annotation was computed. [2018-01-21 00:30:45,211 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 556 570) no Hoare annotation was computed. [2018-01-21 00:30:45,211 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 556 570) the Hoare annotation is: true [2018-01-21 00:30:45,211 INFO L401 ceAbstractionStarter]: For program point L565'(line 565) no Hoare annotation was computed. [2018-01-21 00:30:45,211 INFO L404 ceAbstractionStarter]: At program point L567'(line 567) the Hoare annotation is: true [2018-01-21 00:30:45,211 INFO L401 ceAbstractionStarter]: For program point L565''(line 565) no Hoare annotation was computed. [2018-01-21 00:30:45,211 INFO L401 ceAbstractionStarter]: For program point L566''(line 566) no Hoare annotation was computed. [2018-01-21 00:30:45,215 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:45,215 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:45,215 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:45,215 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:45,215 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:45,216 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:45,216 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:45,216 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:30:45,216 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 00:30:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:30:45,218 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:45,219 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:30:45,219 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:30:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash 108177, now seen corresponding path program 1 times [2018-01-21 00:30:45,219 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:45,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,221 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:45,221 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,221 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:45,250 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:45,256 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:45,259 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:45,260 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:45,260 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:45,260 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:45,260 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:45,260 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:45,260 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:45,260 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:30:45,260 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 00:30:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 00:30:45,263 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:45,263 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:45,264 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1805820915, now seen corresponding path program 1 times [2018-01-21 00:30:45,264 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:45,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,265 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:45,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,265 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:45,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:45,427 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:45,427 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 00:30:45,428 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:45,428 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:30:45,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:30:45,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:30:45,429 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 00:30:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:45,587 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2018-01-21 00:30:45,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 00:30:45,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-01-21 00:30:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:45,592 INFO L225 Difference]: With dead ends: 67 [2018-01-21 00:30:45,593 INFO L226 Difference]: Without dead ends: 46 [2018-01-21 00:30:45,593 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:30:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-21 00:30:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-01-21 00:30:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 00:30:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-21 00:30:45,607 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2018-01-21 00:30:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:45,607 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-21 00:30:45,607 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:30:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-21 00:30:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 00:30:45,609 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:45,609 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:45,609 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash 90570689, now seen corresponding path program 1 times [2018-01-21 00:30:45,609 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:45,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,611 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:45,611 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:45,611 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:45,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:45,925 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:45,925 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 00:30:45,925 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:45,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 00:30:45,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 00:30:45,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-01-21 00:30:45,928 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 12 states. [2018-01-21 00:30:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:46,251 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2018-01-21 00:30:46,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-21 00:30:46,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2018-01-21 00:30:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:46,255 INFO L225 Difference]: With dead ends: 74 [2018-01-21 00:30:46,255 INFO L226 Difference]: Without dead ends: 65 [2018-01-21 00:30:46,256 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-01-21 00:30:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-21 00:30:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-01-21 00:30:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 00:30:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-01-21 00:30:46,272 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 33 [2018-01-21 00:30:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:46,272 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-01-21 00:30:46,272 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 00:30:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-01-21 00:30:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 00:30:46,274 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:46,274 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:46,274 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2013798723, now seen corresponding path program 1 times [2018-01-21 00:30:46,275 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:46,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:46,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:46,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:46,276 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:46,326 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:46,336 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:46,340 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:46,341 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:46,342 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:46,354 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:46,355 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:46,355 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:46,355 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:46,355 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:46,355 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:46,355 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:46,355 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:30:46,355 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 00:30:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 00:30:46,357 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:46,357 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:46,357 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash 976179698, now seen corresponding path program 1 times [2018-01-21 00:30:46,357 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:46,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:46,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:46,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:46,358 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:46,372 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:46,500 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:46,500 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:30:46,500 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:46,500 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:30:46,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:30:46,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:30:46,501 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 00:30:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:46,686 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-01-21 00:30:46,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:30:46,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-21 00:30:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:46,687 INFO L225 Difference]: With dead ends: 56 [2018-01-21 00:30:46,687 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:46,688 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:46,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-01-21 00:30:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:46,689 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:46,689 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:30:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:46,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:46,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:30:46 BoogieIcfgContainer [2018-01-21 00:30:46,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:30:46,694 INFO L168 Benchmark]: Toolchain (without parser) took 2420.84 ms. Allocated memory was 307.2 MB in the beginning and 482.9 MB in the end (delta: 175.6 MB). Free memory was 265.5 MB in the beginning and 431.1 MB in the end (delta: -165.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:46,696 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:30:46,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.38 ms. Allocated memory is still 307.2 MB. Free memory was 264.6 MB in the beginning and 254.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:46,696 INFO L168 Benchmark]: Boogie Preprocessor took 35.28 ms. Allocated memory is still 307.2 MB. Free memory was 254.3 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:46,697 INFO L168 Benchmark]: RCFGBuilder took 263.24 ms. Allocated memory is still 307.2 MB. Free memory was 252.4 MB in the beginning and 235.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:46,697 INFO L168 Benchmark]: TraceAbstraction took 1912.08 ms. Allocated memory was 307.2 MB in the beginning and 482.9 MB in the end (delta: 175.6 MB). Free memory was 235.8 MB in the beginning and 431.1 MB in the end (delta: -195.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:30:46,699 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 203.38 ms. Allocated memory is still 307.2 MB. Free memory was 264.6 MB in the beginning and 254.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.28 ms. Allocated memory is still 307.2 MB. Free memory was 254.3 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 263.24 ms. Allocated memory is still 307.2 MB. Free memory was 252.4 MB in the beginning and 235.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1912.08 ms. Allocated memory was 307.2 MB in the beginning and 482.9 MB in the end (delta: 175.6 MB). Free memory was 235.8 MB in the beginning and 431.1 MB in the end (delta: -195.3 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: cstrncpyErr0EnsuresViolation CFG has 4 procedures, 43 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 43 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L557] int length = __VERIFIER_nondet_int(); [L558] int n = __VERIFIER_nondet_int(); [L559] COND FALSE !(length < 1) VAL [length=5, n=1] [L562] COND FALSE !(n < 1) VAL [length=5, n=1] [L565] EXPR, FCALL __builtin_alloca (n * sizeof(char)) VAL [__builtin_alloca (n * sizeof(char))={7:0}, length=5, n=1] [L565] char* nondetArea = (char*) __builtin_alloca (n * sizeof(char)); VAL [__builtin_alloca (n * sizeof(char))={7:0}, length=5, n=1, nondetArea={7:0}] [L566] EXPR, FCALL __builtin_alloca (length * sizeof(char)) VAL [__builtin_alloca (length * sizeof(char))={10:0}, __builtin_alloca (n * sizeof(char))={7:0}, length=5, n=1, nondetArea={7:0}] [L566] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); VAL [__builtin_alloca (length * sizeof(char))={10:0}, __builtin_alloca (n * sizeof(char))={7:0}, length=5, n=1, nondetArea={7:0}, nondetString={10:0}] [L567] FCALL nondetString[length-1] = '\0' VAL [__builtin_alloca (length * sizeof(char))={10:0}, __builtin_alloca (n * sizeof(char))={7:0}, length=5, n=1, nondetArea={7:0}, nondetString={10:0}] [L568] CALL cstrncpy(nondetArea, nondetString, n) VAL [\old(n)=1, dst={7:0}, src={10:0}] [L543] COND TRUE n != 0 [L544] char *d = dst; [L545] const char *s = src; VAL [\old(n)=1, d={7:0}, dst={7:0}, dst={7:0}, n=1, s={10:0}, src={10:0}, src={10:0}] [L547] EXPR d++ [L547] EXPR s++ VAL [\old(n)=1, d={7:1}, d++={7:0}, dst={7:0}, dst={7:0}, n=1, s={10:1}, s++=8, s++={10:0}, src={10:0}, src={10:0}] [L547] EXPR, FCALL *d++ = *s++ VAL [\old(n)=1, d={7:1}, d++={7:0}, dst={7:0}, dst={7:0}, n=1, s={10:1}, s++=8, s++={10:0}, src={10:0}, src={10:0}] [L547] COND FALSE !((*d++ = *s++) == 0) [L552] EXPR --n VAL [--n=0, \old(n)=1, d={7:1}, dst={7:0}, dst={7:0}, n=0, s={10:1}, src={10:0}, src={10:0}] [L552] COND FALSE !(--n != 0) [L554] RET return (dst); VAL [\old(n)=1, \result={7:0}, d={7:1}, dst={7:0}, dst={7:0}, n=0, s={10:1}, src={10:0}, src={10:0}] [L568] cstrncpy(nondetArea, nondetString, n) VAL [__builtin_alloca (length * sizeof(char))={10:0}, __builtin_alloca (n * sizeof(char))={7:0}, cstrncpy(nondetArea, nondetString, n)={7:0}, length=5, n=1, nondetArea={7:0}, nondetString={10:0}] [L569] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 43 locations, 4 error locations. UNSAFE Result, 1.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 86 SDslu, 325 SDs, 0 SdLazy, 141 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 7356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 556]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 43 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 22 SDslu, 23 SDs, 0 SdLazy, 127 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 4080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - InvariantResult [Line: 546]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 548]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-30-46-709.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-30-46-709.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-30-46-709.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-30-46-709.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-30-46-709.csv Received shutdown request...