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/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d4a2356 [2018-03-23 11:41:53,701 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-23 11:41:53,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-23 11:41:53,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-23 11:41:53,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-23 11:41:53,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-23 11:41:53,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-23 11:41:53,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-23 11:41:53,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-23 11:41:53,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-23 11:41:53,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-23 11:41:53,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-23 11:41:53,730 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-23 11:41:53,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-23 11:41:53,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-23 11:41:53,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-23 11:41:53,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-23 11:41:53,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-23 11:41:53,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-23 11:41:53,742 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-23 11:41:53,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-03-23 11:41:53,744 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-03-23 11:41:53,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-03-23 11:41:53,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-03-23 11:41:53,747 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-03-23 11:41:53,748 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-03-23 11:41:53,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-03-23 11:41:53,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-03-23 11:41:53,750 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-03-23 11:41:53,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-23 11:41:53,751 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-23 11:41:53,751 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-03-23 11:41:53,760 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-23 11:41:53,760 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-23 11:41:53,761 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-23 11:41:53,761 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-23 11:41:53,761 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-23 11:41:53,762 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-23 11:41:53,762 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-23 11:41:53,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-23 11:41:53,763 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-23 11:41:53,763 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-23 11:41:53,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-23 11:41:53,763 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-23 11:41:53,763 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-23 11:41:53,764 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-23 11:41:53,764 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-03-23 11:41:53,764 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-23 11:41:53,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-23 11:41:53,764 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-23 11:41:53,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-23 11:41:53,765 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-23 11:41:53,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-03-23 11:41:53,765 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-23 11:41:53,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-23 11:41:53,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-23 11:41:53,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-23 11:41:53,766 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-23 11:41:53,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-23 11:41:53,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-23 11:41:53,767 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-03-23 11:41:53,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-23 11:41:53,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-23 11:41:53,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-23 11:41:53,768 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-23 11:41:53,768 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-23 11:41:53,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-23 11:41:53,815 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-23 11:41:53,819 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-23 11:41:53,821 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-23 11:41:53,821 INFO L276 PluginConnector]: CDTParser initialized [2018-03-23 11:41:53,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-03-23 11:41:54,161 INFO L228 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG1a0947db5 [2018-03-23 11:41:54,258 INFO L291 CDTParser]: IsIndexed: true [2018-03-23 11:41:54,258 INFO L292 CDTParser]: Found 1 translation units. [2018-03-23 11:41:54,259 INFO L171 CDTParser]: Scanning cstrncpy_unsafe_false-valid-deref.i [2018-03-23 11:41:54,260 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-23 11:41:54,260 INFO L215 ultiparseSymbolTable]: [2018-03-23 11:41:54,260 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-23 11:41:54,260 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncpy_unsafe_false_valid_deref_i__ ('') in cstrncpy_unsafe_false-valid-deref.i [2018-03-23 11:41:54,260 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncpy_unsafe_false-valid-deref.i [2018-03-23 11:41:54,260 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-23 11:41:54,260 INFO L233 ultiparseSymbolTable]: [2018-03-23 11:41:54,274 INFO L334 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG1a0947db5 [2018-03-23 11:41:54,278 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-23 11:41:54,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-23 11:41:54,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-23 11:41:54,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-23 11:41:54,288 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-23 11:41:54,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b5b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54, skipping insertion in model container [2018-03-23 11:41:54,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,310 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 11:41:54,322 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 11:41:54,478 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 11:41:54,504 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 11:41:54,508 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-03-23 11:41:54,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54 WrapperNode [2018-03-23 11:41:54,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-23 11:41:54,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-23 11:41:54,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-23 11:41:54,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-23 11:41:54,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (1/1) ... [2018-03-23 11:41:54,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-23 11:41:54,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-23 11:41:54,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-23 11:41:54,549 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-23 11:41:54,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (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 [2018-03-23 11:41:54,603 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-23 11:41:54,603 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-23 11:41:54,603 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-03-23 11:41:54,603 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-23 11:41:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-23 11:41:54,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-23 11:41:54,902 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-23 11:41:54,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 11:41:54 BoogieIcfgContainer [2018-03-23 11:41:54,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-23 11:41:54,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-23 11:41:54,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-23 11:41:54,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-23 11:41:54,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.03 11:41:54" (1/3) ... [2018-03-23 11:41:54,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2884cc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 11:41:54, skipping insertion in model container [2018-03-23 11:41:54,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:41:54" (2/3) ... [2018-03-23 11:41:54,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2884cc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 11:41:54, skipping insertion in model container [2018-03-23 11:41:54,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 11:41:54" (3/3) ... [2018-03-23 11:41:54,912 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-03-23 11:41:54,921 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-23 11:41:54,929 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-03-23 11:41:54,966 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-23 11:41:54,967 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-23 11:41:54,967 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-23 11:41:54,967 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-23 11:41:54,968 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-23 11:41:54,968 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-23 11:41:54,968 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-23 11:41:54,968 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-23 11:41:54,968 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-23 11:41:54,969 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-23 11:41:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-03-23 11:41:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-03-23 11:41:54,992 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:41:54,993 INFO L353 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] [2018-03-23 11:41:54,993 INFO L408 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-03-23 11:41:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash -478134567, now seen corresponding path program 1 times [2018-03-23 11:41:54,998 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:41:54,999 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:41:55,036 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:41:55,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:41:55,036 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:41:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:41:55,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:41:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:41:55,114 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 11:41:55,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-03-23 11:41:55,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-03-23 11:41:55,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-03-23 11:41:55,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-03-23 11:41:55,129 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-03-23 11:41:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:41:55,149 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-03-23 11:41:55,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-03-23 11:41:55,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-03-23 11:41:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:41:55,159 INFO L225 Difference]: With dead ends: 74 [2018-03-23 11:41:55,159 INFO L226 Difference]: Without dead ends: 54 [2018-03-23 11:41:55,163 INFO L568 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 [2018-03-23 11:41:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-03-23 11:41:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-03-23 11:41:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-03-23 11:41:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-03-23 11:41:55,196 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 26 [2018-03-23 11:41:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:41:55,197 INFO L459 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-03-23 11:41:55,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-03-23 11:41:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-03-23 11:41:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-03-23 11:41:55,198 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:41:55,198 INFO L353 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] [2018-03-23 11:41:55,198 INFO L408 AbstractCegarLoop]: === Iteration 2 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-03-23 11:41:55,199 INFO L82 PathProgramCache]: Analyzing trace with hash 898093519, now seen corresponding path program 1 times [2018-03-23 11:41:55,199 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:41:55,199 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:41:55,200 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:41:55,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:41:55,201 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:41:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-03-23 11:41:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-03-23 11:41:55,273 INFO L419 BasicCegarLoop]: Counterexample might be feasible [2018-03-23 11:41:55,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.03 11:41:55 BoogieIcfgContainer [2018-03-23 11:41:55,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-23 11:41:55,311 INFO L168 Benchmark]: Toolchain (without parser) took 1033.23 ms. Allocated memory was 299.9 MB in the beginning and 457.2 MB in the end (delta: 157.3 MB). Free memory was 245.6 MB in the beginning and 394.9 MB in the end (delta: -149.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-03-23 11:41:55,313 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 299.9 MB. Free memory is still 264.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-23 11:41:55,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.02 ms. Allocated memory is still 299.9 MB. Free memory was 245.6 MB in the beginning and 235.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-03-23 11:41:55,315 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 299.9 MB. Free memory was 235.6 MB in the beginning and 234.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-03-23 11:41:55,315 INFO L168 Benchmark]: RCFGBuilder took 354.51 ms. Allocated memory was 299.9 MB in the beginning and 457.2 MB in the end (delta: 157.3 MB). Free memory was 234.6 MB in the beginning and 423.8 MB in the end (delta: -189.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 5.3 GB. [2018-03-23 11:41:55,316 INFO L168 Benchmark]: TraceAbstraction took 406.60 ms. Allocated memory is still 457.2 MB. Free memory was 423.8 MB in the beginning and 394.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 5.3 GB. [2018-03-23 11:41:55,319 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 299.9 MB. Free memory is still 264.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 236.02 ms. Allocated memory is still 299.9 MB. Free memory was 245.6 MB in the beginning and 235.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 299.9 MB. Free memory was 235.6 MB in the beginning and 234.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 354.51 ms. Allocated memory was 299.9 MB in the beginning and 457.2 MB in the end (delta: 157.3 MB). Free memory was 234.6 MB in the beginning and 423.8 MB in the end (delta: -189.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 406.60 ms. Allocated memory is still 457.2 MB. Free memory was 423.8 MB in the beginning and 394.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] char *s1; [L22] char *s2; [L23] int n = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, n=1] [L24] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={4:-2}, s2={6:-1}] [L4] char *dst = s1; VAL [\old(n)=1, dst={4:-2}, n=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}] [L5] const char *src = s2; VAL [\old(n)=1, dst={4:-2}, n=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L6] char *us; VAL [\old(n)=1, dst={4:-2}, n=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L7] int n2; VAL [\old(n)=1, dst={4:-2}, n=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L8] COND TRUE n > 0 VAL [\old(n)=1, dst={4:-2}, n=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L9] n-- VAL [\old(n)=1, dst={4:-2}, n=1, n--=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L9] n-- VAL [\old(n)=1, dst={4:-2}, n=0, n--=1, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L10] dst++ VAL [\old(n)=1, dst={4:-2}, dst++={4:-2}, n=0, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L10] dst++ VAL [\old(n)=1, dst={4:-1}, dst++={4:-2}, n=0, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}] [L10] src++ VAL [\old(n)=1, dst={4:-1}, dst++={4:-2}, n=0, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:-1}, src++={6:-1}] [L10] src++ VAL [\old(n)=1, dst={4:-1}, dst++={4:-2}, n=0, s1={4:-2}, s1={4:-2}, s2={6:-1}, s2={6:-1}, src={6:0}, src++={6:-1}] [L10] FCALL src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 7 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 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=65occurred 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, 0.0s DumpTime, 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, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available 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_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-23_11-41-55-329.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-23_11-41-55-329.csv Received shutdown request...