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/cstrcat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:20:26,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:20:26,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:20:26,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:20:26,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:20:26,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:20:26,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:20:26,932 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:20:26,934 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:20:26,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:20:26,936 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-23 14:20:26,958 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:20:26,958 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:20:26,959 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 14:20:26,967 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:20:26,967 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:20:26,968 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:20:26,968 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:20:26,968 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:20:26,968 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:20:26,968 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:20:26,969 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:20:26,969 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:20:26,969 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:20:26,969 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:20:26,969 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:20:26,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:20:26,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:20:26,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:20:26,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:20:26,971 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:20:26,971 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:20:26,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:20:26,972 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:20:26,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:20:26,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:20:26,973 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:20:26,973 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:20:26,974 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:20:27,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:20:27,017 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:20:27,020 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:20:27,021 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:20:27,021 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:20:27,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrcat_unsafe_false-valid-deref.i [2018-01-23 14:20:27,132 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:20:27,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:20:27,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:27,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:20:27,143 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:20:27,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f4a4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27, skipping insertion in model container [2018-01-23 14:20:27,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,160 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:27,174 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:27,284 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:27,300 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:27,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27 WrapperNode [2018-01-23 14:20:27,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:27,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:20:27,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:20:27,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:20:27,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (1/1) ... [2018-01-23 14:20:27,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:20:27,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:20:27,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:20:27,336 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:20:27,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (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 14:20:27,383 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:20:27,383 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:20:27,383 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcat [2018-01-23 14:20:27,383 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:20:27,383 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:20:27,383 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcat [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:20:27,384 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:20:27,532 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:20:27,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:27 BoogieIcfgContainer [2018-01-23 14:20:27,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:20:27,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:20:27,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:20:27,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:20:27,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:20:27" (1/3) ... [2018-01-23 14:20:27,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e55a4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:27, skipping insertion in model container [2018-01-23 14:20:27,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:27" (2/3) ... [2018-01-23 14:20:27,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e55a4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:27, skipping insertion in model container [2018-01-23 14:20:27,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:27" (3/3) ... [2018-01-23 14:20:27,540 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe_false-valid-deref.i [2018-01-23 14:20:27,550 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:20:27,557 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:20:27,600 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:27,600 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:27,600 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:27,600 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:27,600 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:27,601 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:27,601 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:27,601 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:20:27,602 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-23 14:20:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:20:27,630 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:27,631 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:20:27,631 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:20:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash 73038, now seen corresponding path program 1 times [2018-01-23 14:20:27,638 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:27,639 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:27,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,698 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:27,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:27,761 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:27,768 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:27,774 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:27,774 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:27,774 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:27,774 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:27,774 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:27,774 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:27,774 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:27,775 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrcatErr0EnsuresViolation======== [2018-01-23 14:20:27,775 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-23 14:20:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-23 14:20:27,777 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:27,777 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:27,777 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr0EnsuresViolation]=== [2018-01-23 14:20:27,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1955432963, now seen corresponding path program 1 times [2018-01-23 14:20:27,778 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:27,778 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:27,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,779 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:27,780 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:27,799 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:27,829 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 14:20:27,831 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:27,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:27,833 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:27,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:27,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:27,853 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-23 14:20:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:27,871 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-23 14:20:27,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:27,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-23 14:20:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:27,879 INFO L225 Difference]: With dead ends: 42 [2018-01-23 14:20:27,880 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:20:27,882 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 14:20:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:20:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:20:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:20:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:20:27,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-01-23 14:20:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:27,904 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:20:27,904 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:20:27,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:20:27,907 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:27,978 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:27,978 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:27,978 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:27,978 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:27,979 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:27,979 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:27,979 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:20:27,979 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-23 14:20:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-23 14:20:27,982 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:27,982 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 14:20:27,982 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash 598228398, now seen corresponding path program 1 times [2018-01-23 14:20:27,982 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:27,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:27,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,984 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:27,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:27,996 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:28,009 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 14:20:28,010 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:28,010 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:28,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:28,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:28,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:28,011 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-23 14:20:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:28,015 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-23 14:20:28,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:28,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-23 14:20:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:28,019 INFO L225 Difference]: With dead ends: 42 [2018-01-23 14:20:28,019 INFO L226 Difference]: Without dead ends: 24 [2018-01-23 14:20:28,019 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 14:20:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-23 14:20:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-23 14:20:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-23 14:20:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-23 14:20:28,028 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2018-01-23 14:20:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:28,028 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-23 14:20:28,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-23 14:20:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-23 14:20:28,029 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:28,029 INFO L322 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] [2018-01-23 14:20:28,029 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash 376830319, now seen corresponding path program 1 times [2018-01-23 14:20:28,030 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:28,030 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:28,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:28,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:28,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:28,078 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:28,085 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:28,088 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:28,089 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:28,089 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:28,101 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:28,102 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:28,102 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:28,102 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:28,102 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:28,102 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:28,102 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:28,102 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:20:28,102 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-23 14:20:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-23 14:20:28,104 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:28,104 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:20:28,104 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1661945480, now seen corresponding path program 1 times [2018-01-23 14:20:28,105 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:28,105 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:28,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:28,106 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:28,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:28,112 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:20:28,122 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 14:20:28,122 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:28,122 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:20:28,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:20:28,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:20:28,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:20:28,123 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-23 14:20:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:28,125 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-23 14:20:28,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:20:28,126 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-23 14:20:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:28,126 INFO L225 Difference]: With dead ends: 42 [2018-01-23 14:20:28,126 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:20:28,126 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 14:20:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:20:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:20:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:20:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:20:28,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-23 14:20:28,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:28,127 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:20:28,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:20:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:20:28,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:20:28,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:20:28 BoogieIcfgContainer [2018-01-23 14:20:28,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:20:28,130 INFO L168 Benchmark]: Toolchain (without parser) took 997.78 ms. Allocated memory was 307.8 MB in the beginning and 464.5 MB in the end (delta: 156.8 MB). Free memory was 267.1 MB in the beginning and 425.5 MB in the end (delta: -158.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:28,131 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 307.8 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:28,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.74 ms. Allocated memory is still 307.8 MB. Free memory was 267.1 MB in the beginning and 259.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:28,132 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 307.8 MB. Free memory was 259.0 MB in the beginning and 257.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:28,132 INFO L168 Benchmark]: RCFGBuilder took 196.71 ms. Allocated memory is still 307.8 MB. Free memory was 257.0 MB in the beginning and 243.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:28,133 INFO L168 Benchmark]: TraceAbstraction took 596.09 ms. Allocated memory was 307.8 MB in the beginning and 464.5 MB in the end (delta: 156.8 MB). Free memory was 243.3 MB in the beginning and 425.5 MB in the end (delta: -182.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:28,135 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 307.8 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 167.74 ms. Allocated memory is still 307.8 MB. Free memory was 267.1 MB in the beginning and 259.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 307.8 MB. Free memory was 259.0 MB in the beginning and 257.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 196.71 ms. Allocated memory is still 307.8 MB. Free memory was 257.0 MB in the beginning and 243.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 596.09 ms. Allocated memory was 307.8 MB in the beginning and 464.5 MB in the end (delta: 156.8 MB). Free memory was 243.3 MB in the beginning and 425.5 MB in the end (delta: -182.2 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: - 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, 28 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=28occurred 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 - PositiveResult [Line: 1]: 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: cstrcatErr0EnsuresViolation CFG has 4 procedures, 28 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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: [L11] char *s1; [L12] char *s2; [L13] CALL cstrcat(s1, s2) VAL [s1={3:-1}, s2={4:-2}] [L3] char *s = s1; VAL [s={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-2}, s2={4:-2}] [L4] EXPR, FCALL \read(*s) VAL [\read(*s)=0, s={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-2}, s2={4:-2}] [L4] COND FALSE !(*s != '\0') [L6] EXPR s++ [L6] EXPR s2++ VAL [s={3:0}, s++={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-1}, s2={4:-2}, s2++={4:-2}s2++=0] [L6] EXPR, FCALL *s++ = *s2++ VAL [s={3:0}, s++={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-1}, s2={4:-2}, s2++={4:-2}s2++=0] [L6] COND FALSE !((*s++ = *s2++) != '\0') [L8] RET return s1; VAL [\result={3:-1}, s={3:0}, s1={3:-1}, s1={3:-1}, s2={4:-1}, s2={4:-2}] [L13] cstrcat(s1, s2) VAL [cstrcat(s1, s2)={3:-1}, s1={3:-1}, s2={4:-2}] [L14] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 28 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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: 10]: 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, 28 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-20-28-145.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-20-28-145.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-20-28-145.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-20-28-145.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-20-28-145.csv Received shutdown request...