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_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:45:15,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:45:15,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:45:15,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:45:15,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:45:15,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:45:15,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:45:15,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:45:15,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:45:15,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:45:15,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:45:15,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:45:15,983 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:45:15,984 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:45:15,985 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:45:15,988 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:45:15,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:45:15,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:45:15,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:45:15,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:45:15,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:45:16,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:45:16,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:45:16,003 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_mostprecise.epf [2018-01-21 02:45:16,013 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:45:16,013 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:45:16,014 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:45:16,014 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:45:16,014 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:45:16,014 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:45:16,015 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:45:16,015 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:45:16,015 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:45:16,016 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:45:16,016 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:45:16,016 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:45:16,016 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:45:16,016 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:45:16,017 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:45:16,018 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:45:16,018 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:45:16,018 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:45:16,018 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:45:16,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:45:16,019 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:45:16,019 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:45:16,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:45:16,019 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:45:16,019 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:45:16,020 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:45:16,020 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:45:16,020 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:45:16,020 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:45:16,020 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:45:16,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:45:16,021 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:45:16,021 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:45:16,022 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:45:16,022 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:45:16,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:45:16,071 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:45:16,076 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:45:16,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:45:16,078 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:45:16,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-01-21 02:45:16,344 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:45:16,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:45:16,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:45:16,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:45:16,356 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:45:16,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9ade40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16, skipping insertion in model container [2018-01-21 02:45:16,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,381 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:45:16,396 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:45:16,512 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:45:16,531 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:45:16,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16 WrapperNode [2018-01-21 02:45:16,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:45:16,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:45:16,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:45:16,539 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:45:16,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (1/1) ... [2018-01-21 02:45:16,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:45:16,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:45:16,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:45:16,579 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:45:16,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (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 02:45:16,632 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:45:16,632 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:45:16,632 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 02:45:16,632 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:45:16,632 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 02:45:16,633 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:45:16,634 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:45:16,634 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:45:16,790 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:45:16,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:45:16 BoogieIcfgContainer [2018-01-21 02:45:16,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:45:16,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:45:16,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:45:16,794 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:45:16,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:45:16" (1/3) ... [2018-01-21 02:45:16,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92a484e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:45:16, skipping insertion in model container [2018-01-21 02:45:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:45:16" (2/3) ... [2018-01-21 02:45:16,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92a484e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:45:16, skipping insertion in model container [2018-01-21 02:45:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:45:16" (3/3) ... [2018-01-21 02:45:16,798 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-01-21 02:45:16,806 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:45:16,813 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 02:45:16,851 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:45:16,852 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:45:16,852 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:45:16,852 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:45:16,852 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:45:16,852 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:45:16,853 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:45:16,853 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 02:45:16,854 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:45:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 02:45:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 02:45:16,883 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:45:16,885 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:45:16,885 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 02:45:16,891 INFO L82 PathProgramCache]: Analyzing trace with hash 772645859, now seen corresponding path program 1 times [2018-01-21 02:45:16,894 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:45:16,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:16,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:45:16,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:16,950 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:45:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:45:16,997 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:45:17,031 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 02:45:17,033 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:45:17,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:45:17,034 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:45:17,036 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:45:17,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:45:17,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:45:17,049 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 02:45:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:45:17,066 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-21 02:45:17,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:45:17,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-01-21 02:45:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:45:17,073 INFO L225 Difference]: With dead ends: 39 [2018-01-21 02:45:17,073 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:45:17,077 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:45:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:45:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:45:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:45:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:45:17,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-01-21 02:45:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:45:17,101 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:45:17,101 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:45:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:45:17,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:45:17,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 02:45:17,138 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 2 19) the Hoare annotation is: true [2018-01-21 02:45:17,138 INFO L401 ceAbstractionStarter]: For program point L10''(line 10) no Hoare annotation was computed. [2018-01-21 02:45:17,138 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 2 19) no Hoare annotation was computed. [2018-01-21 02:45:17,138 INFO L401 ceAbstractionStarter]: For program point L8'''(lines 8 17) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point L13'(lines 13 14) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 2 19) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L404 ceAbstractionStarter]: At program point L13'''(lines 13 14) the Hoare annotation is: true [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 2 19) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point L8(lines 8 17) no Hoare annotation was computed. [2018-01-21 02:45:17,139 INFO L401 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-01-21 02:45:17,140 INFO L401 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2018-01-21 02:45:17,140 INFO L404 ceAbstractionStarter]: At program point L8''(lines 8 17) the Hoare annotation is: true [2018-01-21 02:45:17,141 INFO L401 ceAbstractionStarter]: For program point L14'(line 14) no Hoare annotation was computed. [2018-01-21 02:45:17,141 INFO L401 ceAbstractionStarter]: For program point L10'(line 10) no Hoare annotation was computed. [2018-01-21 02:45:17,141 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,141 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,141 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 26) the Hoare annotation is: true [2018-01-21 02:45:17,142 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,142 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 26) the Hoare annotation is: true [2018-01-21 02:45:17,142 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,142 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 26) the Hoare annotation is: true [2018-01-21 02:45:17,142 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,142 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 26) no Hoare annotation was computed. [2018-01-21 02:45:17,143 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 20 26) the Hoare annotation is: true [2018-01-21 02:45:17,143 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2018-01-21 02:45:17,143 INFO L401 ceAbstractionStarter]: For program point L24'(line 24) no Hoare annotation was computed. [2018-01-21 02:45:17,143 INFO L404 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2018-01-21 02:45:17,143 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2018-01-21 02:45:17,144 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 20 26) no Hoare annotation was computed. [2018-01-21 02:45:17,147 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:45:17,147 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:45:17,147 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:45:17,147 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:45:17,147 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:45:17,147 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:45:17,147 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:45:17,148 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 02:45:17,148 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:45:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 02:45:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 02:45:17,150 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:45:17,150 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 02:45:17,150 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 02:45:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash 81045, now seen corresponding path program 1 times [2018-01-21 02:45:17,151 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:45:17,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:45:17,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,152 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:45:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:45:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:45:17,245 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:45:17,252 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:45:17,257 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:45:17,258 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:45:17,258 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:45:17,258 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:45:17,258 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:45:17,258 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:45:17,258 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:45:17,258 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 02:45:17,258 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:45:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 02:45:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 02:45:17,261 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:45:17,261 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:45:17,261 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:45:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1021427151, now seen corresponding path program 1 times [2018-01-21 02:45:17,262 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:45:17,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:45:17,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,263 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:45:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:45:17,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:45:17,286 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 02:45:17,286 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:45:17,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:45:17,286 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:45:17,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:45:17,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:45:17,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:45:17,287 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 02:45:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:45:17,290 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-21 02:45:17,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:45:17,290 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-21 02:45:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:45:17,293 INFO L225 Difference]: With dead ends: 39 [2018-01-21 02:45:17,293 INFO L226 Difference]: Without dead ends: 26 [2018-01-21 02:45:17,294 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:45:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-21 02:45:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-21 02:45:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-21 02:45:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-01-21 02:45:17,304 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-01-21 02:45:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:45:17,305 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-01-21 02:45:17,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:45:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-01-21 02:45:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 02:45:17,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:45:17,306 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:45:17,306 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:45:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1369988298, now seen corresponding path program 1 times [2018-01-21 02:45:17,307 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:45:17,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:45:17,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,308 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:45:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:45:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:45:17,349 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:45:17,354 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:45:17,356 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:45:17,357 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:45:17,357 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:45:17,364 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:45:17,364 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:45:17,364 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:45:17,364 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:45:17,364 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:45:17,364 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:45:17,365 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:45:17,365 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 02:45:17,365 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:45:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 02:45:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 02:45:17,366 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:45:17,367 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:45:17,367 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 02:45:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1163072761, now seen corresponding path program 1 times [2018-01-21 02:45:17,367 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:45:17,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,368 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:45:17,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:45:17,368 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:45:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:45:17,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:45:17,388 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 02:45:17,389 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:45:17,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:45:17,389 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:45:17,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:45:17,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:45:17,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:45:17,390 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 02:45:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:45:17,394 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-21 02:45:17,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:45:17,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-21 02:45:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:45:17,395 INFO L225 Difference]: With dead ends: 39 [2018-01-21 02:45:17,395 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:45:17,396 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:45:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:45:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:45:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:45:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:45:17,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 02:45:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:45:17,397 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:45:17,397 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:45:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:45:17,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:45:17,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 02:45:17 BoogieIcfgContainer [2018-01-21 02:45:17,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 02:45:17,401 INFO L168 Benchmark]: Toolchain (without parser) took 1056.18 ms. Allocated memory was 304.6 MB in the beginning and 464.5 MB in the end (delta: 159.9 MB). Free memory was 263.9 MB in the beginning and 425.4 MB in the end (delta: -161.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:45:17,402 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:45:17,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.28 ms. Allocated memory is still 304.6 MB. Free memory was 263.9 MB in the beginning and 255.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-21 02:45:17,403 INFO L168 Benchmark]: Boogie Preprocessor took 40.36 ms. Allocated memory is still 304.6 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:45:17,403 INFO L168 Benchmark]: RCFGBuilder took 212.04 ms. Allocated memory is still 304.6 MB. Free memory was 253.8 MB in the beginning and 238.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:45:17,404 INFO L168 Benchmark]: TraceAbstraction took 608.30 ms. Allocated memory was 304.6 MB in the beginning and 464.5 MB in the end (delta: 159.9 MB). Free memory was 238.8 MB in the beginning and 425.4 MB in the end (delta: -186.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:45:17,407 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 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 187.28 ms. Allocated memory is still 304.6 MB. Free memory was 263.9 MB in the beginning and 255.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.36 ms. Allocated memory is still 304.6 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 212.04 ms. Allocated memory is still 304.6 MB. Free memory was 253.8 MB in the beginning and 238.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 608.30 ms. Allocated memory was 304.6 MB in the beginning and 464.5 MB in the end (delta: 159.9 MB). Free memory was 238.8 MB in the beginning and 425.4 MB in the end (delta: -186.6 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: 2]: 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, 30 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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, 30 locations, 4 error locations. UNSAFE Result, 0.1s 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=30occurred 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: [L21] char *s1; [L22] char *s2; [L23] int n = __VERIFIER_nondet_int(); [L24] CALL cstrncpy(s1, s2, n) VAL [\old(n)=0, s1={4:6}, s2={3:2}] [L4] char *dst = s1; [L5] const char *src = s2; [L6] char *us; [L7] int n2; VAL [\old(n)=0, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L8] COND FALSE !(n > 0) VAL [\old(n)=0, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L18] RET return s1; VAL [\old(n)=0, \result={4:6}, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L24] cstrncpy(s1, s2, n) VAL [cstrncpy(s1, s2, n)={4:6}, n=0, s1={4:6}, s2={3:2}] [L25] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 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 - PositiveResult [Line: 20]: 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, 30 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: 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/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_02-45-17-419.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_02-45-17-419.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_02-45-17-419.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_02-45-17-419.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_02-45-17-419.csv Received shutdown request...