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-acfac67 [2018-01-28 20:57:34,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 20:57:34,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 20:57:34,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 20:57:34,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 20:57:34,707 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 20:57:34,709 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 20:57:34,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 20:57:34,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 20:57:34,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 20:57:34,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 20:57:34,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 20:57:34,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 20:57:34,719 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 20:57:34,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 20:57:34,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 20:57:34,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 20:57:34,727 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 20:57:34,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 20:57:34,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 20:57:34,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 20:57:34,734 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 20:57:34,734 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 20:57:34,736 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 20:57:34,736 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 20:57:34,738 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 20:57:34,738 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 20:57:34,739 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 20:57:34,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 20:57:34,739 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 20:57:34,740 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 20:57:34,740 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 [2018-01-28 20:57:34,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 20:57:34,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 20:57:34,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 20:57:34,758 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 20:57:34,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 20:57:34,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 20:57:34,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 20:57:34,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 20:57:34,759 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 20:57:34,759 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 20:57:34,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 20:57:34,760 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 20:57:34,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 20:57:34,760 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 20:57:34,760 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 20:57:34,760 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 20:57:34,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 20:57:34,761 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 20:57:34,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 20:57:34,761 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 20:57:34,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 20:57:34,762 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 20:57:34,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 20:57:34,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 20:57:34,762 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 20:57:34,762 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 20:57:34,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 20:57:34,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 20:57:34,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 20:57:34,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 20:57:34,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 20:57:34,764 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 20:57:34,765 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 20:57:34,765 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 20:57:34,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 20:57:34,828 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 20:57:34,833 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 20:57:34,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 20:57:34,836 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 20:57:34,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-01-28 20:57:35,073 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 20:57:35,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 20:57:35,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 20:57:35,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 20:57:35,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 20:57:35,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aebf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35, skipping insertion in model container [2018-01-28 20:57:35,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,117 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 20:57:35,143 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 20:57:35,329 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 20:57:35,403 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 20:57:35,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35 WrapperNode [2018-01-28 20:57:35,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 20:57:35,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 20:57:35,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 20:57:35,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 20:57:35,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (1/1) ... [2018-01-28 20:57:35,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 20:57:35,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 20:57:35,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 20:57:35,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 20:57:35,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (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 [2018-01-28 20:57:35,519 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 20:57:35,519 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 20:57:35,520 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-28 20:57:35,520 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 20:57:35,520 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 20:57:35,520 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 20:57:35,520 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 20:57:35,520 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 20:57:35,521 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 20:57:35,521 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-28 20:57:35,521 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 20:57:35,521 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 20:57:35,521 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 20:57:35,829 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 20:57:35,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:35 BoogieIcfgContainer [2018-01-28 20:57:35,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 20:57:35,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 20:57:35,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 20:57:35,833 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 20:57:35,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:57:35" (1/3) ... [2018-01-28 20:57:35,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6482314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:35, skipping insertion in model container [2018-01-28 20:57:35,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:35" (2/3) ... [2018-01-28 20:57:35,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6482314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:35, skipping insertion in model container [2018-01-28 20:57:35,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:35" (3/3) ... [2018-01-28 20:57:35,837 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-01-28 20:57:35,845 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 20:57:35,851 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-28 20:57:35,888 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 20:57:35,889 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 20:57:35,889 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 20:57:35,889 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 20:57:35,889 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 20:57:35,889 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 20:57:35,889 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 20:57:35,890 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 20:57:35,890 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 20:57:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-28 20:57:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-28 20:57:35,923 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:35,925 INFO L330 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] [2018-01-28 20:57:35,925 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-28 20:57:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash -478134567, now seen corresponding path program 1 times [2018-01-28 20:57:35,933 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:35,934 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:35,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:35,996 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:35,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:36,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 20:57:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:36,125 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 20:57:36,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-28 20:57:36,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-28 20:57:36,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-28 20:57:36,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-28 20:57:36,147 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-28 20:57:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 20:57:36,182 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-01-28 20:57:36,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-28 20:57:36,184 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-28 20:57:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 20:57:36,198 INFO L225 Difference]: With dead ends: 74 [2018-01-28 20:57:36,199 INFO L226 Difference]: Without dead ends: 54 [2018-01-28 20:57:36,208 INFO L533 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 [2018-01-28 20:57:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-28 20:57:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-28 20:57:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-28 20:57:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-01-28 20:57:36,257 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 26 [2018-01-28 20:57:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 20:57:36,258 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-01-28 20:57:36,258 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-28 20:57:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-01-28 20:57:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-28 20:57:36,259 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:36,260 INFO L330 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] [2018-01-28 20:57:36,260 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-28 20:57:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash 898093519, now seen corresponding path program 1 times [2018-01-28 20:57:36,260 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:36,261 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:36,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:36,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:36,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 20:57:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 20:57:36,421 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 20:57:36,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:57:36 BoogieIcfgContainer [2018-01-28 20:57:36,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 20:57:36,474 INFO L168 Benchmark]: Toolchain (without parser) took 1400.32 ms. Allocated memory was 307.2 MB in the beginning and 463.5 MB in the end (delta: 156.2 MB). Free memory was 268.3 MB in the beginning and 434.3 MB in the end (delta: -166.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:36,475 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 307.2 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 20:57:36,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.80 ms. Allocated memory is still 307.2 MB. Free memory was 268.3 MB in the beginning and 259.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:36,476 INFO L168 Benchmark]: Boogie Preprocessor took 43.79 ms. Allocated memory is still 307.2 MB. Free memory was 259.2 MB in the beginning and 258.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-28 20:57:36,477 INFO L168 Benchmark]: RCFGBuilder took 373.85 ms. Allocated memory is still 307.2 MB. Free memory was 258.2 MB in the beginning and 239.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:36,477 INFO L168 Benchmark]: TraceAbstraction took 642.32 ms. Allocated memory was 307.2 MB in the beginning and 463.5 MB in the end (delta: 156.2 MB). Free memory was 239.6 MB in the beginning and 434.3 MB in the end (delta: -194.7 MB). Peak memory consumption was 41.5 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:36,480 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 307.2 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 330.80 ms. Allocated memory is still 307.2 MB. Free memory was 268.3 MB in the beginning and 259.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 43.79 ms. Allocated memory is still 307.2 MB. Free memory was 259.2 MB in the beginning and 258.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 373.85 ms. Allocated memory is still 307.2 MB. Free memory was 258.2 MB in the beginning and 239.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 642.32 ms. Allocated memory was 307.2 MB in the beginning and 463.5 MB in the end (delta: 156.2 MB). Free memory was 239.6 MB in the beginning and 434.3 MB in the end (delta: -194.7 MB). Peak memory consumption was 41.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: 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=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={6:0}, src++={6:-1}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 7 error locations. UNSAFE Result, 0.5s 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-0-2018-01-28_20-57-36-494.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-0-2018-01-28_20-57-36-494.csv Received shutdown request...