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_smtcomp.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 10:08:12,148 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:08:12,149 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:08:12,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:08:12,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:08:12,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:08:12,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:08:12,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:08:12,167 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:08:12,168 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:08:12,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:08:12,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:08:12,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:08:12,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:08:12,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:08:12,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:08:12,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:08:12,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:08:12,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:08:12,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:08:12,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:08:12,187 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:08:12,188 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:08:12,188 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_smtcomp.epf [2018-01-21 10:08:12,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:08:12,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:08:12,199 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:08:12,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:08:12,199 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:08:12,200 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:08:12,200 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:08:12,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:08:12,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:08:12,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:08:12,201 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:08:12,201 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:08:12,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:08:12,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:08:12,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:08:12,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:08:12,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:08:12,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:08:12,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:08:12,203 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:08:12,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:08:12,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:08:12,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:08:12,204 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:08:12,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:08:12,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:08:12,205 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:08:12,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:08:12,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:08:12,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:08:12,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:08:12,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:08:12,207 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:08:12,207 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:08:12,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:08:12,249 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:08:12,252 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:08:12,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:08:12,255 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:08:12,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:08:12,411 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:08:12,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:08:12,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:08:12,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:08:12,425 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:08:12,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6ab902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12, skipping insertion in model container [2018-01-21 10:08:12,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,449 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:08:12,489 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:08:12,615 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:08:12,637 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:08:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12 WrapperNode [2018-01-21 10:08:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:08:12,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:08:12,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:08:12,644 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:08:12,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (1/1) ... [2018-01-21 10:08:12,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:08:12,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:08:12,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:08:12,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:08:12,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (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 10:08:12,719 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:08:12,719 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:08:12,720 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 10:08:12,720 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 10:08:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:08:12,721 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:08:12,721 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:08:12,923 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:08:12,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:08:12 BoogieIcfgContainer [2018-01-21 10:08:12,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:08:12,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:08:12,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:08:12,961 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:08:12,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:08:12" (1/3) ... [2018-01-21 10:08:12,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669df369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:08:12, skipping insertion in model container [2018-01-21 10:08:12,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:12" (2/3) ... [2018-01-21 10:08:12,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669df369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:08:12, skipping insertion in model container [2018-01-21 10:08:12,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:08:12" (3/3) ... [2018-01-21 10:08:12,965 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:08:12,971 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:08:12,976 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:08:13,012 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:13,012 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:13,012 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:13,012 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:13,012 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:13,012 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:13,012 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:13,013 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 10:08:13,014 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 10:08:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 10:08:13,044 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:13,045 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 10:08:13,045 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 10:08:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash 928514088, now seen corresponding path program 1 times [2018-01-21 10:08:13,054 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:13,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:13,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,099 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:13,158 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:13,202 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 10:08:13,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:13,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 10:08:13,205 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:13,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:08:13,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:08:13,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:13,221 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-01-21 10:08:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:13,240 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-01-21 10:08:13,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:08:13,241 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 10:08:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:13,248 INFO L225 Difference]: With dead ends: 57 [2018-01-21 10:08:13,248 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:08:13,251 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 10:08:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:08:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:08:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:08:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:08:13,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 10:08:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:13,354 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:08:13,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:08:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:08:13,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:08:13,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 10:08:13,377 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 552) no Hoare annotation was computed. [2018-01-21 10:08:13,377 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 540 555) the Hoare annotation is: true [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L543(lines 543 553) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L548(lines 548 549) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L547(line 547) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 540 555) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L546'(lines 546 552) no Hoare annotation was computed. [2018-01-21 10:08:13,378 INFO L401 ceAbstractionStarter]: For program point L548'(lines 548 549) no Hoare annotation was computed. [2018-01-21 10:08:13,379 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 540 555) no Hoare annotation was computed. [2018-01-21 10:08:13,379 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 540 555) no Hoare annotation was computed. [2018-01-21 10:08:13,379 INFO L401 ceAbstractionStarter]: For program point L543'(lines 543 553) no Hoare annotation was computed. [2018-01-21 10:08:13,379 INFO L404 ceAbstractionStarter]: At program point L548'''(lines 548 549) the Hoare annotation is: true [2018-01-21 10:08:13,379 INFO L401 ceAbstractionStarter]: For program point L547'(line 547) no Hoare annotation was computed. [2018-01-21 10:08:13,380 INFO L404 ceAbstractionStarter]: At program point L546'''(lines 546 552) the Hoare annotation is: true [2018-01-21 10:08:13,380 INFO L401 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-21 10:08:13,380 INFO L401 ceAbstractionStarter]: For program point L547''(line 547) no Hoare annotation was computed. [2018-01-21 10:08:13,380 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,380 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,380 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 10:08:13,380 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,381 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 10:08:13,381 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,381 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 570) the Hoare annotation is: true [2018-01-21 10:08:13,381 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,381 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 10:08:13,381 INFO L401 ceAbstractionStarter]: For program point L568(line 568) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L566(line 566) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L565(line 565) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L559''(lines 559 561) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L566'(line 566) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 556 570) no Hoare annotation was computed. [2018-01-21 10:08:13,382 INFO L401 ceAbstractionStarter]: For program point L566'''(line 566) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L401 ceAbstractionStarter]: For program point L562'(lines 562 564) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 556 570) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L401 ceAbstractionStarter]: For program point L559(lines 559 561) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 556 570) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 556 570) the Hoare annotation is: true [2018-01-21 10:08:13,383 INFO L401 ceAbstractionStarter]: For program point L565'(line 565) no Hoare annotation was computed. [2018-01-21 10:08:13,383 INFO L404 ceAbstractionStarter]: At program point L567'(line 567) the Hoare annotation is: true [2018-01-21 10:08:13,384 INFO L401 ceAbstractionStarter]: For program point L565''(line 565) no Hoare annotation was computed. [2018-01-21 10:08:13,384 INFO L401 ceAbstractionStarter]: For program point L566''(line 566) no Hoare annotation was computed. [2018-01-21 10:08:13,387 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:13,387 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:13,387 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:13,388 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:13,388 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:13,388 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:13,388 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:13,388 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:08:13,388 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 10:08:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:08:13,391 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:13,391 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:08:13,391 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:08:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 108177, now seen corresponding path program 1 times [2018-01-21 10:08:13,391 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:13,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,393 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:13,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,393 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:13,424 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:08:13,429 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:13,433 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:13,433 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:13,433 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:13,434 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:13,434 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:13,434 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:13,434 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:13,434 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:08:13,434 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 10:08:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 10:08:13,437 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:13,437 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 10:08:13,437 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:08:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1805820915, now seen corresponding path program 1 times [2018-01-21 10:08:13,438 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:13,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,439 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:13,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,440 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:13,468 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:13,600 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 10:08:13,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:13,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:08:13,600 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:13,601 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:08:13,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:08:13,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:08:13,602 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 10:08:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:13,687 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2018-01-21 10:08:13,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:08:13,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-01-21 10:08:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:13,693 INFO L225 Difference]: With dead ends: 67 [2018-01-21 10:08:13,693 INFO L226 Difference]: Without dead ends: 46 [2018-01-21 10:08:13,694 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 10:08:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-21 10:08:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-01-21 10:08:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 10:08:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-21 10:08:13,707 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2018-01-21 10:08:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:13,707 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-21 10:08:13,707 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:08:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-21 10:08:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 10:08:13,709 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:13,709 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 10:08:13,709 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:08:13,709 INFO L82 PathProgramCache]: Analyzing trace with hash 90570689, now seen corresponding path program 1 times [2018-01-21 10:08:13,709 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:13,710 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,711 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:13,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:13,711 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:13,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:13,956 WARN L146 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 22 DAG size of output 9 [2018-01-21 10:08:14,142 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 10:08:14,143 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:14,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 10:08:14,143 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:14,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 10:08:14,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 10:08:14,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-01-21 10:08:14,146 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 12 states. [2018-01-21 10:08:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:14,446 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2018-01-21 10:08:14,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-21 10:08:14,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2018-01-21 10:08:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:14,451 INFO L225 Difference]: With dead ends: 74 [2018-01-21 10:08:14,451 INFO L226 Difference]: Without dead ends: 65 [2018-01-21 10:08:14,452 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-01-21 10:08:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-21 10:08:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-01-21 10:08:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 10:08:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-01-21 10:08:14,470 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 33 [2018-01-21 10:08:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:14,470 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-01-21 10:08:14,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 10:08:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-01-21 10:08:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 10:08:14,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:14,474 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 10:08:14,474 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:08:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2013798723, now seen corresponding path program 1 times [2018-01-21 10:08:14,474 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:14,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:14,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:14,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:14,475 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:14,529 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:08:14,539 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:14,544 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:14,546 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:14,547 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:14,562 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:14,562 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:14,562 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:14,562 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:14,563 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:14,563 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:14,563 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:14,563 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:08:14,563 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 10:08:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 10:08:14,565 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:14,566 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 10:08:14,566 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:08:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 976179698, now seen corresponding path program 1 times [2018-01-21 10:08:14,566 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:14,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:14,567 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:14,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:14,567 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:14,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:14,721 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 10:08:14,722 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:14,722 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:08:14,722 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:14,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:08:14,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:08:14,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:08:14,723 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 10:08:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:14,850 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-01-21 10:08:14,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 10:08:14,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-21 10:08:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:14,855 INFO L225 Difference]: With dead ends: 56 [2018-01-21 10:08:14,855 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:08:14,856 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 10:08:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:08:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:08:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:08:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:08:14,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-01-21 10:08:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:14,857 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:08:14,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:08:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:08:14,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:08:14,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:08:14 BoogieIcfgContainer [2018-01-21 10:08:14,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:08:14,860 INFO L168 Benchmark]: Toolchain (without parser) took 2447.83 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 262.9 MB in the beginning and 427.0 MB in the end (delta: -164.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:14,862 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 306.7 MB. Free memory is still 268.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:08:14,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.34 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 251.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:14,862 INFO L168 Benchmark]: Boogie Preprocessor took 28.47 ms. Allocated memory is still 306.7 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:14,863 INFO L168 Benchmark]: RCFGBuilder took 285.59 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 232.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:14,863 INFO L168 Benchmark]: TraceAbstraction took 1900.26 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 232.6 MB in the beginning and 427.0 MB in the end (delta: -194.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:08:14,865 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 306.7 MB. Free memory is still 268.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 225.34 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 251.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.47 ms. Allocated memory is still 306.7 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 285.59 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 232.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1900.26 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 232.6 MB in the beginning and 427.0 MB in the end (delta: -194.4 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, 0.0s 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++={10:0}, s++=8, 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, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 86 SDslu, 325 SDs, 0 SdLazy, 141 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s 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, 0.5s 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, 0.2s 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, 0.0s 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_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-08-14-876.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-08-14-876.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-08-14-876.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-08-14-876.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-08-14-876.csv Received shutdown request...