java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:20:34,033 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:20:34,035 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:20:34,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:20:34,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:20:34,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:20:34,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:20:34,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:20:34,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:20:34,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:20:34,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:20:34,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:20:34,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:20:34,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:20:34,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:20:34,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:20:34,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:20:34,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:20:34,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:20:34,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:20:34,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:20:34,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:20:34,081 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:20:34,081 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:20:34,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:20:34,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:20:34,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:20:34,091 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:20:34,091 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:20:34,091 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:20:34,091 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:20:34,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:20:34,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:20:34,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:20:34,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:20:34,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:20:34,094 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:20:34,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:20:34,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:20:34,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:20:34,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:20:34,096 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:20:34,096 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:20:34,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:20:34,140 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:20:34,144 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:20:34,145 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:20:34,145 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:20:34,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-01-23 14:20:34,244 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:20:34,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:20:34,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:34,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:20:34,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:20:34,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8c9252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34, skipping insertion in model container [2018-01-23 14:20:34,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,280 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:34,300 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:34,429 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:34,445 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:34,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34 WrapperNode [2018-01-23 14:20:34,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:34,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:20:34,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:20:34,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:20:34,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (1/1) ... [2018-01-23 14:20:34,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:20:34,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:20:34,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:20:34,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:20:34,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (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 [2018-01-23 14:20:34,525 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:20:34,526 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:20:34,526 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-23 14:20:34,526 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:20:34,526 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:20:34,526 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:20:34,526 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:20:34,527 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:20:34,677 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:20:34,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:34 BoogieIcfgContainer [2018-01-23 14:20:34,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:20:34,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:20:34,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:20:34,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:20:34,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:20:34" (1/3) ... [2018-01-23 14:20:34,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6ef4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:34, skipping insertion in model container [2018-01-23 14:20:34,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:34" (2/3) ... [2018-01-23 14:20:34,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6ef4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:34, skipping insertion in model container [2018-01-23 14:20:34,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:34" (3/3) ... [2018-01-23 14:20:34,683 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-01-23 14:20:34,689 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:20:34,694 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:20:34,728 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:34,728 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:34,728 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:34,728 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:34,729 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:34,729 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:34,729 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:34,729 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-23 14:20:34,730 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-23 14:20:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-23 14:20:34,760 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:34,761 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:34,761 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-23 14:20:34,766 INFO L82 PathProgramCache]: Analyzing trace with hash 772645859, now seen corresponding path program 1 times [2018-01-23 14:20:34,768 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:34,769 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:34,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:34,817 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:34,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:34,867 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:20:34,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:34,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:34,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:34,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:34,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:34,913 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-23 14:20:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:34,929 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-23 14:20:34,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:34,931 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-01-23 14:20:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:34,936 INFO L225 Difference]: With dead ends: 39 [2018-01-23 14:20:34,937 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:20:34,940 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:20:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:20:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:20:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:20:34,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-01-23 14:20:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:34,963 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:20:34,963 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:20:34,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:20:34,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-23 14:20:35,005 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 2 19) the Hoare annotation is: true [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point L10''(line 10) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 2 19) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point L8'''(lines 8 17) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point L13'(lines 13 14) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 2 19) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L404 ceAbstractionStarter]: At program point L13'''(lines 13 14) the Hoare annotation is: true [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 2 19) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-01-23 14:20:35,006 INFO L401 ceAbstractionStarter]: For program point L8(lines 8 17) no Hoare annotation was computed. [2018-01-23 14:20:35,007 INFO L401 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-01-23 14:20:35,007 INFO L401 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2018-01-23 14:20:35,007 INFO L404 ceAbstractionStarter]: At program point L8''(lines 8 17) the Hoare annotation is: true [2018-01-23 14:20:35,007 INFO L401 ceAbstractionStarter]: For program point L14'(line 14) no Hoare annotation was computed. [2018-01-23 14:20:35,007 INFO L401 ceAbstractionStarter]: For program point L10'(line 10) no Hoare annotation was computed. [2018-01-23 14:20:35,007 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,008 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,008 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 26) the Hoare annotation is: true [2018-01-23 14:20:35,008 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,008 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 26) the Hoare annotation is: true [2018-01-23 14:20:35,008 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,009 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 26) the Hoare annotation is: true [2018-01-23 14:20:35,009 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,009 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 26) no Hoare annotation was computed. [2018-01-23 14:20:35,009 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 20 26) the Hoare annotation is: true [2018-01-23 14:20:35,009 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2018-01-23 14:20:35,009 INFO L401 ceAbstractionStarter]: For program point L24'(line 24) no Hoare annotation was computed. [2018-01-23 14:20:35,010 INFO L404 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2018-01-23 14:20:35,010 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2018-01-23 14:20:35,010 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 20 26) no Hoare annotation was computed. [2018-01-23 14:20:35,013 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:35,013 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:35,014 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:35,014 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:35,014 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:35,014 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:35,014 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:35,014 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:20:35,015 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-23 14:20:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:20:35,017 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:35,017 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:20:35,017 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:20:35,018 INFO L82 PathProgramCache]: Analyzing trace with hash 81045, now seen corresponding path program 1 times [2018-01-23 14:20:35,018 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:35,018 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:35,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,020 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:35,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:35,111 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:35,116 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:35,120 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:35,120 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:35,120 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:35,120 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:35,120 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:35,121 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:35,121 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:35,121 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:20:35,121 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-23 14:20:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-23 14:20:35,124 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:35,124 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:35,124 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1021427151, now seen corresponding path program 1 times [2018-01-23 14:20:35,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:35,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:35,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:35,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:35,139 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:20:35,154 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:35,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:35,154 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:35,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:35,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:35,155 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-23 14:20:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:35,159 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-23 14:20:35,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:35,159 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-23 14:20:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:35,162 INFO L225 Difference]: With dead ends: 39 [2018-01-23 14:20:35,163 INFO L226 Difference]: Without dead ends: 26 [2018-01-23 14:20:35,163 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-23 14:20:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-23 14:20:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-23 14:20:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-01-23 14:20:35,175 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-01-23 14:20:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:35,175 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-01-23 14:20:35,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-01-23 14:20:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-23 14:20:35,176 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:35,176 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:35,176 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:35,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1369988298, now seen corresponding path program 1 times [2018-01-23 14:20:35,177 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:35,177 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:35,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,178 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:35,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:35,214 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:35,219 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:35,221 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:35,222 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:35,222 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:35,228 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:35,228 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:35,229 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:35,229 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:35,229 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:35,229 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:35,229 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:35,229 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:20:35,229 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-23 14:20:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-23 14:20:35,230 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:35,231 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:35,231 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1163072761, now seen corresponding path program 1 times [2018-01-23 14:20:35,231 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:35,231 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:35,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:35,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:35,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:20:35,251 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:35,252 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:35,252 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:35,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:35,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:35,252 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-23 14:20:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:35,255 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-01-23 14:20:35,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:35,255 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-23 14:20:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:35,255 INFO L225 Difference]: With dead ends: 39 [2018-01-23 14:20:35,255 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:20:35,256 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:20:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:20:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:20:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:20:35,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-23 14:20:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:35,256 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:20:35,257 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:20:35,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:20:35,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:20:35 BoogieIcfgContainer [2018-01-23 14:20:35,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:20:35,259 INFO L168 Benchmark]: Toolchain (without parser) took 1015.05 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 261.8 MB in the beginning and 420.4 MB in the end (delta: -158.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:35,261 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:35,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.04 ms. Allocated memory is still 302.5 MB. Free memory was 261.8 MB in the beginning and 252.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:35,261 INFO L168 Benchmark]: Boogie Preprocessor took 28.33 ms. Allocated memory is still 302.5 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-23 14:20:35,262 INFO L168 Benchmark]: RCFGBuilder took 197.45 ms. Allocated memory is still 302.5 MB. Free memory was 251.9 MB in the beginning and 237.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:35,262 INFO L168 Benchmark]: TraceAbstraction took 580.21 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 236.1 MB in the beginning and 420.4 MB in the end (delta: -184.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:35,264 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 201.04 ms. Allocated memory is still 302.5 MB. Free memory was 261.8 MB in the beginning and 252.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.33 ms. Allocated memory is still 302.5 MB. Free memory was 252.9 MB in the beginning and 251.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 197.45 ms. Allocated memory is still 302.5 MB. Free memory was 251.9 MB in the beginning and 237.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 580.21 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 236.1 MB in the beginning and 420.4 MB in the end (delta: -184.3 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: cstrncpyErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L21] char *s1; [L22] char *s2; [L23] int n = __VERIFIER_nondet_int(); [L24] CALL cstrncpy(s1, s2, n) VAL [\old(n)=0, s1={4:6}, s2={3:2}] [L4] char *dst = s1; [L5] const char *src = s2; [L6] char *us; [L7] int n2; VAL [\old(n)=0, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L8] COND FALSE !(n > 0) VAL [\old(n)=0, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L18] RET return s1; VAL [\old(n)=0, \result={4:6}, dst={4:6}, n=0, s1={4:6}, s1={4:6}, s2={3:2}, s2={3:2}, src={3:2}] [L24] cstrncpy(s1, s2, n) VAL [cstrncpy(s1, s2, n)={4:6}, n=0, s1={4:6}, s2={3:2}] [L25] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-20-35-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-20-35-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-20-35-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-20-35-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-20-35-275.csv Received shutdown request...