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_precise.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 05:36:04,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:04,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:04,872 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:04,872 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:04,874 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:04,875 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:04,876 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:04,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:04,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:04,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:04,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:04,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:04,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:04,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:04,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:04,888 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:04,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:04,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:04,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:04,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 05:36:04,896 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 05:36:04,896 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 05:36:04,897 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 05:36:04,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 05:36:04,899 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 05:36:04,899 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 05:36:04,900 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 05:36:04,900 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 05:36:04,901 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:36:04,901 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:36:04,902 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_precise.epf [2018-01-21 05:36:04,915 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:04,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:04,916 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:04,917 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:04,917 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:04,917 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:04,917 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:04,917 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:04,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:04,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:04,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:04,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:04,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:04,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:04,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:04,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:04,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:04,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:04,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:04,921 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:04,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:04,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:04,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:04,922 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:04,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:04,923 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:04,923 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:04,924 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:04,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:04,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:04,924 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:04,924 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:04,925 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:04,926 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:04,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:04,974 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:04,978 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:04,979 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:04,980 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:04,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:05,216 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:05,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:05,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:05,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:05,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:05,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793dbc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05, skipping insertion in model container [2018-01-21 05:36:05,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,246 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:05,287 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:05,411 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:05,429 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:05,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05 WrapperNode [2018-01-21 05:36:05,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:05,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:05,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:05,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:05,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (1/1) ... [2018-01-21 05:36:05,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:05,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:05,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:05,477 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:05,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (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 05:36:05,526 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:05,526 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:05,526 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 05:36:05,526 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:05,526 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:05,526 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 05:36:05,527 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:05,528 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:05,528 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:05,721 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:05,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:05 BoogieIcfgContainer [2018-01-21 05:36:05,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:05,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:05,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:05,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:05,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:05" (1/3) ... [2018-01-21 05:36:05,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd725a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:05, skipping insertion in model container [2018-01-21 05:36:05,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:05" (2/3) ... [2018-01-21 05:36:05,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd725a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:05, skipping insertion in model container [2018-01-21 05:36:05,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:05" (3/3) ... [2018-01-21 05:36:05,729 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:05,735 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:05,742 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:05,787 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:05,788 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:05,788 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:05,788 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:05,788 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:05,788 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:05,788 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:05,789 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 05:36:05,790 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 05:36:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 05:36:05,812 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:05,813 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 05:36:05,813 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 05:36:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash 928514088, now seen corresponding path program 1 times [2018-01-21 05:36:05,820 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:05,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:05,862 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:05,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:05,863 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:05,930 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:05,976 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 05:36:05,978 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:05,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 05:36:05,979 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:05,981 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:05,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:05,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:05,993 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-01-21 05:36:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:06,092 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-01-21 05:36:06,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:06,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 05:36:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:06,101 INFO L225 Difference]: With dead ends: 57 [2018-01-21 05:36:06,101 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:06,104 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 05:36:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:06,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 05:36:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:06,125 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:06,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:06,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:06,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 05:36:06,148 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 552) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 540 555) the Hoare annotation is: true [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point L543(lines 543 553) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point L548(lines 548 549) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point L547(line 547) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 540 555) no Hoare annotation was computed. [2018-01-21 05:36:06,149 INFO L401 ceAbstractionStarter]: For program point L546'(lines 546 552) no Hoare annotation was computed. [2018-01-21 05:36:06,150 INFO L401 ceAbstractionStarter]: For program point L548'(lines 548 549) no Hoare annotation was computed. [2018-01-21 05:36:06,150 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 540 555) no Hoare annotation was computed. [2018-01-21 05:36:06,150 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 540 555) no Hoare annotation was computed. [2018-01-21 05:36:06,150 INFO L401 ceAbstractionStarter]: For program point L543'(lines 543 553) no Hoare annotation was computed. [2018-01-21 05:36:06,150 INFO L404 ceAbstractionStarter]: At program point L548'''(lines 548 549) the Hoare annotation is: true [2018-01-21 05:36:06,151 INFO L401 ceAbstractionStarter]: For program point L547'(line 547) no Hoare annotation was computed. [2018-01-21 05:36:06,151 INFO L404 ceAbstractionStarter]: At program point L546'''(lines 546 552) the Hoare annotation is: true [2018-01-21 05:36:06,151 INFO L401 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-21 05:36:06,151 INFO L401 ceAbstractionStarter]: For program point L547''(line 547) no Hoare annotation was computed. [2018-01-21 05:36:06,151 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,151 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,152 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 05:36:06,152 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,152 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 570) the Hoare annotation is: true [2018-01-21 05:36:06,152 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,152 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 570) the Hoare annotation is: true [2018-01-21 05:36:06,152 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,152 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 570) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L568(line 568) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L566(line 566) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L565(line 565) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L559''(lines 559 561) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point L566'(line 566) no Hoare annotation was computed. [2018-01-21 05:36:06,153 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 556 570) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L401 ceAbstractionStarter]: For program point L566'''(line 566) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L401 ceAbstractionStarter]: For program point L562'(lines 562 564) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 556 570) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L401 ceAbstractionStarter]: For program point L559(lines 559 561) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 556 570) no Hoare annotation was computed. [2018-01-21 05:36:06,154 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 556 570) the Hoare annotation is: true [2018-01-21 05:36:06,155 INFO L401 ceAbstractionStarter]: For program point L565'(line 565) no Hoare annotation was computed. [2018-01-21 05:36:06,155 INFO L404 ceAbstractionStarter]: At program point L567'(line 567) the Hoare annotation is: true [2018-01-21 05:36:06,155 INFO L401 ceAbstractionStarter]: For program point L565''(line 565) no Hoare annotation was computed. [2018-01-21 05:36:06,155 INFO L401 ceAbstractionStarter]: For program point L566''(line 566) no Hoare annotation was computed. [2018-01-21 05:36:06,158 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:06,159 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:06,159 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:06,159 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:06,159 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:06,159 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:06,159 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:06,160 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:06,160 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 05:36:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:06,162 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:06,162 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:06,162 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 108177, now seen corresponding path program 1 times [2018-01-21 05:36:06,163 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:06,164 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,164 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:06,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,165 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:06,198 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:06,202 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:06,205 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:06,206 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:06,206 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:06,206 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:06,206 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:06,206 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:06,206 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:06,206 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:06,206 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 05:36:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:36:06,208 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:06,209 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 05:36:06,209 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1805820915, now seen corresponding path program 1 times [2018-01-21 05:36:06,209 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:06,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,210 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:06,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:06,245 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:06,387 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 05:36:06,387 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:06,387 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 05:36:06,388 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:06,388 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 05:36:06,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 05:36:06,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:36:06,389 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 05:36:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:06,497 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2018-01-21 05:36:06,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 05:36:06,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-01-21 05:36:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:06,502 INFO L225 Difference]: With dead ends: 67 [2018-01-21 05:36:06,502 INFO L226 Difference]: Without dead ends: 46 [2018-01-21 05:36:06,503 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 05:36:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-21 05:36:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-01-21 05:36:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 05:36:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-21 05:36:06,516 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2018-01-21 05:36:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:06,517 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-21 05:36:06,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 05:36:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-21 05:36:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 05:36:06,518 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:06,518 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 05:36:06,518 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 90570689, now seen corresponding path program 1 times [2018-01-21 05:36:06,519 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:06,520 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,520 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:06,520 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:06,520 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:06,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:06,877 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 05:36:06,877 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:06,877 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 05:36:06,877 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:06,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 05:36:06,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 05:36:06,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-01-21 05:36:06,880 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 12 states. [2018-01-21 05:36:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:07,184 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2018-01-21 05:36:07,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-21 05:36:07,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2018-01-21 05:36:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:07,190 INFO L225 Difference]: With dead ends: 74 [2018-01-21 05:36:07,190 INFO L226 Difference]: Without dead ends: 65 [2018-01-21 05:36:07,192 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 05:36:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-21 05:36:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-01-21 05:36:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 05:36:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-01-21 05:36:07,208 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 33 [2018-01-21 05:36:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:07,209 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-01-21 05:36:07,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 05:36:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-01-21 05:36:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 05:36:07,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:07,212 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 05:36:07,212 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:07,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2013798723, now seen corresponding path program 1 times [2018-01-21 05:36:07,212 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:07,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:07,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:07,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:07,214 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:07,265 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:07,274 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:07,280 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:07,282 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:07,282 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:07,299 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:07,299 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:07,299 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:07,299 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:07,299 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:07,299 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:07,299 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:07,299 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:36:07,300 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-21 05:36:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:36:07,302 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:07,302 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 05:36:07,302 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash 976179698, now seen corresponding path program 1 times [2018-01-21 05:36:07,303 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:07,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:07,304 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:07,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:07,304 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:07,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:07,469 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 05:36:07,469 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:07,470 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 05:36:07,470 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:07,470 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 05:36:07,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 05:36:07,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:36:07,470 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-21 05:36:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:07,666 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-01-21 05:36:07,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 05:36:07,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-21 05:36:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:07,668 INFO L225 Difference]: With dead ends: 56 [2018-01-21 05:36:07,668 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:07,669 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-21 05:36:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:07,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-01-21 05:36:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:07,670 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:07,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 05:36:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:07,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:07,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:36:07 BoogieIcfgContainer [2018-01-21 05:36:07,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:36:07,675 INFO L168 Benchmark]: Toolchain (without parser) took 2457.78 ms. Allocated memory was 303.0 MB in the beginning and 475.0 MB in the end (delta: 172.0 MB). Free memory was 261.3 MB in the beginning and 422.8 MB in the end (delta: -161.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:07,676 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:07,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.18 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:07,677 INFO L168 Benchmark]: Boogie Preprocessor took 38.10 ms. Allocated memory is still 303.0 MB. Free memory was 250.1 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:07,677 INFO L168 Benchmark]: RCFGBuilder took 244.47 ms. Allocated memory is still 303.0 MB. Free memory was 248.2 MB in the beginning and 231.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:07,678 INFO L168 Benchmark]: TraceAbstraction took 1951.30 ms. Allocated memory was 303.0 MB in the beginning and 475.0 MB in the end (delta: 172.0 MB). Free memory was 231.5 MB in the beginning and 422.8 MB in the end (delta: -191.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:07,679 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.18 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.10 ms. Allocated memory is still 303.0 MB. Free memory was 250.1 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 244.47 ms. Allocated memory is still 303.0 MB. Free memory was 248.2 MB in the beginning and 231.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1951.30 ms. Allocated memory was 303.0 MB in the beginning and 475.0 MB in the end (delta: 172.0 MB). Free memory was 231.5 MB in the beginning and 422.8 MB in the end (delta: -191.3 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++={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, 1.0s 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, 0.1s 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, 0.1s 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_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-36-07-688.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-36-07-688.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-36-07-688.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-36-07-688.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-36-07-688.csv Received shutdown request...