java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:28:02,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:28:02,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:28:02,846 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:28:02,846 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:28:02,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:28:02,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:28:02,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:28:02,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:28:02,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:28:02,854 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:28:02,854 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:28:02,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:28:02,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:28:02,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:28:02,859 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:28:02,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:28:02,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:28:02,865 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:28:02,866 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:28:02,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:28:02,869 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:28:02,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:28:02,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:28:02,871 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:28:02,872 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:28:02,872 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:28:02,873 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:28:02,873 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:28:02,874 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:28:02,874 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:28:02,875 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:28:02,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:28:02,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:28:02,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:28:02,887 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:28:02,887 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:28:02,887 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:28:02,887 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:28:02,888 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:28:02,888 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:28:02,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:28:02,889 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:28:02,889 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:28:02,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:28:02,890 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:28:02,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:28:02,890 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:28:02,890 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:28:02,890 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:28:02,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:28:02,891 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:28:02,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:28:02,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:28:02,891 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:28:02,892 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:28:02,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:28:02,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:28:02,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:28:02,892 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:28:02,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:28:02,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:28:02,893 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:28:02,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:28:02,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:28:02,894 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:28:02,894 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:28:02,895 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:28:02,895 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:28:02,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:28:02,945 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:28:02,949 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:28:02,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:28:02,951 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:28:02,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-memtrack_true-termination.i [2018-01-24 20:28:03,133 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:28:03,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:28:03,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:28:03,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:28:03,145 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:28:03,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175f8472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03, skipping insertion in model container [2018-01-24 20:28:03,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,162 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:28:03,200 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:28:03,315 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:28:03,329 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:28:03,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03 WrapperNode [2018-01-24 20:28:03,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:28:03,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:28:03,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:28:03,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:28:03,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (1/1) ... [2018-01-24 20:28:03,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:28:03,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:28:03,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:28:03,378 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:28:03,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (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 [2018-01-24 20:28:03,440 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:28:03,440 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:28:03,440 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:28:03,440 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:28:03,441 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:28:03,442 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:28:03,442 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:28:03,629 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:28:03,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:28:03 BoogieIcfgContainer [2018-01-24 20:28:03,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:28:03,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:28:03,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:28:03,634 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:28:03,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:28:03" (1/3) ... [2018-01-24 20:28:03,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:28:03, skipping insertion in model container [2018-01-24 20:28:03,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:03" (2/3) ... [2018-01-24 20:28:03,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:28:03, skipping insertion in model container [2018-01-24 20:28:03,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:28:03" (3/3) ... [2018-01-24 20:28:03,638 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-memtrack_true-termination.i [2018-01-24 20:28:03,648 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:28:03,656 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-24 20:28:03,706 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:28:03,707 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:28:03,707 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:28:03,707 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:28:03,707 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:28:03,707 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:28:03,707 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:28:03,707 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:28:03,708 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:28:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-24 20:28:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:28:03,734 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:03,735 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:03,736 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation]=== [2018-01-24 20:28:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash -746768066, now seen corresponding path program 1 times [2018-01-24 20:28:03,744 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:03,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:03,800 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:03,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:03,801 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:03,854 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:03,957 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:03,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:28:03,957 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:03,960 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:28:03,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:28:03,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:28:03,979 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2018-01-24 20:28:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:04,123 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-01-24 20:28:04,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:28:04,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-24 20:28:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:04,133 INFO L225 Difference]: With dead ends: 33 [2018-01-24 20:28:04,133 INFO L226 Difference]: Without dead ends: 25 [2018-01-24 20:28:04,136 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:28:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-24 20:28:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-01-24 20:28:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-24 20:28:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-01-24 20:28:04,163 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 8 [2018-01-24 20:28:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:04,163 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-01-24 20:28:04,163 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:28:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-01-24 20:28:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:28:04,163 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:04,164 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:04,164 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation]=== [2018-01-24 20:28:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash -746768065, now seen corresponding path program 1 times [2018-01-24 20:28:04,164 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:04,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:04,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:04,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:04,165 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:04,185 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:04,273 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:04,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:28:04,273 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:04,275 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:28:04,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:28:04,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:28:04,276 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-01-24 20:28:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:04,334 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-01-24 20:28:04,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:28:04,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:28:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:04,335 INFO L225 Difference]: With dead ends: 25 [2018-01-24 20:28:04,335 INFO L226 Difference]: Without dead ends: 20 [2018-01-24 20:28:04,336 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:28:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-01-24 20:28:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-01-24 20:28:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-01-24 20:28:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-01-24 20:28:04,340 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2018-01-24 20:28:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:04,341 INFO L432 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-01-24 20:28:04,341 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:28:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-01-24 20:28:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:28:04,341 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:04,342 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:04,342 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation]=== [2018-01-24 20:28:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2020888165, now seen corresponding path program 1 times [2018-01-24 20:28:04,342 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:04,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:04,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:04,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:04,344 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:28:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:28:04,410 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 20:28:04,421 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 20:28:04,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 08:28:04 BoogieIcfgContainer [2018-01-24 20:28:04,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 20:28:04,434 INFO L168 Benchmark]: Toolchain (without parser) took 1301.15 ms. Allocated memory was 306.2 MB in the beginning and 462.9 MB in the end (delta: 156.8 MB). Free memory was 263.5 MB in the beginning and 413.0 MB in the end (delta: -149.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:04,435 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 306.2 MB. Free memory is still 269.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:28:04,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.28 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:04,436 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 306.2 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:04,437 INFO L168 Benchmark]: RCFGBuilder took 252.98 ms. Allocated memory is still 306.2 MB. Free memory was 251.5 MB in the beginning and 237.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:04,437 INFO L168 Benchmark]: TraceAbstraction took 802.21 ms. Allocated memory was 306.2 MB in the beginning and 462.9 MB in the end (delta: 156.8 MB). Free memory was 235.0 MB in the beginning and 413.0 MB in the end (delta: -178.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:28:04,439 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 306.2 MB. Free memory is still 269.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.28 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 306.2 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 252.98 ms. Allocated memory is still 306.2 MB. Free memory was 251.5 MB in the beginning and 237.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 802.21 ms. Allocated memory was 306.2 MB in the beginning and 462.9 MB in the end (delta: 156.8 MB). Free memory was 235.0 MB in the beginning and 413.0 MB in the end (delta: -178.0 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 620]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 620. Possible FailurePath: [L622-L629] FCALL union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; VAL [data={43:0}] [L630] EXPR, FCALL malloc(37U) VAL [data={43:0}, malloc(37U)={41:0}] [L630] FCALL data.p0 = malloc(37U) VAL [data={43:0}, malloc(37U)={41:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L634] FCALL data.str.p2 = 30 VAL [data={43:0}, malloc(37U)={41:0}] [L636] EXPR, FCALL data.str.p2 VAL [data={43:0}, data.str.p2=30, malloc(37U)={41:0}] [L636] COND FALSE !(25 > data.str.p2) [L639] return 0; VAL [\result=0, data={43:0}, malloc(37U)={41:0}] [L639] return 0; VAL [\result=0, malloc(37U)={41:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 11 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 27 SDslu, 16 SDs, 0 SdLazy, 29 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_20-28-04-448.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_20-28-04-448.csv Received shutdown request...