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 0.1.23-1cceb4a [2018-01-29 22:33:21,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 22:33:21,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 22:33:21,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 22:33:21,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 22:33:21,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 22:33:21,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 22:33:21,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 22:33:21,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 22:33:21,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 22:33:21,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 22:33:21,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 22:33:21,341 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 22:33:21,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 22:33:21,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 22:33:21,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 22:33:21,348 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 22:33:21,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 22:33:21,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 22:33:21,353 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 22:33:21,355 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 22:33:21,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 22:33:21,361 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 22:33:21,361 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 [2018-01-29 22:33:21,370 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 22:33:21,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 22:33:21,372 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 22:33:21,372 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 22:33:21,372 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 22:33:21,372 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 22:33:21,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 22:33:21,373 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 22:33:21,373 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 22:33:21,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 22:33:21,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 22:33:21,375 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 22:33:21,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 22:33:21,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 22:33:21,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 22:33:21,375 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 22:33:21,376 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 22:33:21,377 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 22:33:21,377 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 22:33:21,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 22:33:21,422 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 22:33:21,425 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 22:33:21,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 22:33:21,427 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 22:33:21,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-01-29 22:33:21,524 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 22:33:21,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 22:33:21,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:21,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 22:33:21,541 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 22:33:21,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a1c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21, skipping insertion in model container [2018-01-29 22:33:21,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,567 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:21,587 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:21,692 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:21,707 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:21,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21 WrapperNode [2018-01-29 22:33:21,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:21,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 22:33:21,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 22:33:21,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 22:33:21,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (1/1) ... [2018-01-29 22:33:21,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 22:33:21,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 22:33:21,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 22:33:21,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 22:33:21,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (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 [2018-01-29 22:33:21,788 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 22:33:21,789 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 22:33:21,789 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-29 22:33:21,789 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 22:33:21,789 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 22:33:21,790 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 22:33:21,984 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 22:33:21,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:21 BoogieIcfgContainer [2018-01-29 22:33:21,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 22:33:21,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 22:33:21,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 22:33:21,988 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 22:33:21,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:33:21" (1/3) ... [2018-01-29 22:33:21,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dccdd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:21, skipping insertion in model container [2018-01-29 22:33:21,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:21" (2/3) ... [2018-01-29 22:33:21,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dccdd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:21, skipping insertion in model container [2018-01-29 22:33:21,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:21" (3/3) ... [2018-01-29 22:33:21,990 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-01-29 22:33:21,998 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 22:33:22,003 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-29 22:33:22,047 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 22:33:22,047 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 22:33:22,047 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 22:33:22,047 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 22:33:22,047 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 22:33:22,048 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 22:33:22,048 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 22:33:22,048 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 22:33:22,049 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 22:33:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-29 22:33:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-29 22:33:22,072 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:22,074 INFO L350 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] [2018-01-29 22:33:22,074 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 22:33:22,080 INFO L82 PathProgramCache]: Analyzing trace with hash -478134567, now seen corresponding path program 1 times [2018-01-29 22:33:22,082 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:22,083 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:22,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:22,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:22,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:22,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:22,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:22,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 22:33:22,227 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 22:33:22,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 22:33:22,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 22:33:22,240 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-29 22:33:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:22,259 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-01-29 22:33:22,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 22:33:22,260 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-29 22:33:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:22,268 INFO L225 Difference]: With dead ends: 74 [2018-01-29 22:33:22,269 INFO L226 Difference]: Without dead ends: 54 [2018-01-29 22:33:22,272 INFO L553 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 [2018-01-29 22:33:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-29 22:33:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-29 22:33:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-29 22:33:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-01-29 22:33:22,305 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 26 [2018-01-29 22:33:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:22,306 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-01-29 22:33:22,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 22:33:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-01-29 22:33:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-29 22:33:22,307 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:22,307 INFO L350 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] [2018-01-29 22:33:22,307 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 22:33:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash 898093519, now seen corresponding path program 1 times [2018-01-29 22:33:22,308 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:22,308 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:22,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:22,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:22,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:22,445 INFO L409 BasicCegarLoop]: Counterexample might be feasible [2018-01-29 22:33:22,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:33:22 BoogieIcfgContainer [2018-01-29 22:33:22,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 22:33:22,483 INFO L168 Benchmark]: Toolchain (without parser) took 959.15 ms. Allocated memory was 303.0 MB in the beginning and 458.8 MB in the end (delta: 155.7 MB). Free memory was 261.9 MB in the beginning and 429.6 MB in the end (delta: -167.7 MB). Peak memory consumption was 69.9 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:22,485 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 303.0 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 22:33:22,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.29 ms. Allocated memory is still 303.0 MB. Free memory was 261.9 MB in the beginning and 252.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:22,485 INFO L168 Benchmark]: Boogie Preprocessor took 30.79 ms. Allocated memory is still 303.0 MB. Free memory was 252.8 MB in the beginning and 251.8 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 5.3 GB. [2018-01-29 22:33:22,486 INFO L168 Benchmark]: RCFGBuilder took 240.03 ms. Allocated memory is still 303.0 MB. Free memory was 251.8 MB in the beginning and 232.5 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:22,486 INFO L168 Benchmark]: TraceAbstraction took 497.50 ms. Allocated memory was 303.0 MB in the beginning and 458.8 MB in the end (delta: 155.7 MB). Free memory was 232.5 MB in the beginning and 429.6 MB in the end (delta: -197.1 MB). Peak memory consumption was 40.5 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:22,488 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 303.0 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 181.29 ms. Allocated memory is still 303.0 MB. Free memory was 261.9 MB in the beginning and 252.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.79 ms. Allocated memory is still 303.0 MB. Free memory was 252.8 MB in the beginning and 251.8 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 5.3 GB. * RCFGBuilder took 240.03 ms. Allocated memory is still 303.0 MB. Free memory was 251.8 MB in the beginning and 232.5 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 497.50 ms. Allocated memory was 303.0 MB in the beginning and 458.8 MB in the end (delta: 155.7 MB). Free memory was 232.5 MB in the beginning and 429.6 MB in the end (delta: -197.1 MB). Peak memory consumption was 40.5 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, 0.4s 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-0-2018-01-29_22-33-22-500.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-0-2018-01-29_22-33-22-500.csv Received shutdown request...