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_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:55:17,864 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:55:17,866 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:55:17,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:55:17,882 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:55:17,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:55:17,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:55:17,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:55:17,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:55:17,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:55:17,891 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:55:17,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:55:17,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:55:17,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:55:17,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:55:17,897 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:55:17,900 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:55:17,902 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:55:17,903 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:55:17,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:55:17,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 00:55:17,908 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 00:55:17,908 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 00:55:17,909 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 00:55:17,910 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 00:55:17,911 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 00:55:17,912 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 00:55:17,913 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 00:55:17,913 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 00:55:17,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:55:17,914 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:55:17,914 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-21 00:55:17,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:55:17,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:55:17,924 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:55:17,924 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:55:17,924 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:55:17,924 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:55:17,925 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:55:17,925 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:55:17,925 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:55:17,925 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:55:17,925 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:55:17,926 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:55:17,927 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:55:17,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:55:17,927 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:55:17,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:55:17,927 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:55:17,927 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:55:17,928 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:55:17,928 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:55:17,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:55:17,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:55:17,928 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:55:17,928 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:55:17,929 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:55:17,930 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:55:17,930 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:55:17,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:55:17,980 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:55:17,985 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:55:17,986 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:55:17,987 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:55:17,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test1_false-valid-free.i [2018-01-21 00:55:18,189 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:55:18,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:55:18,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:55:18,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:55:18,202 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:55:18,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cf31ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18, skipping insertion in model container [2018-01-21 00:55:18,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,229 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:55:18,284 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:55:18,395 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:55:18,408 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:55:18,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18 WrapperNode [2018-01-21 00:55:18,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:55:18,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:55:18,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:55:18,416 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:55:18,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (1/1) ... [2018-01-21 00:55:18,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:55:18,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:55:18,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:55:18,452 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:55:18,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (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 [2018-01-21 00:55:18,502 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:55:18,502 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:55:18,502 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 00:55:18,502 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 00:55:18,503 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:55:18,503 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:55:18,504 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 00:55:18,504 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 00:55:18,504 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:55:18,504 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:55:18,504 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:55:18,661 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:55:18,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:55:18 BoogieIcfgContainer [2018-01-21 00:55:18,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:55:18,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:55:18,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:55:18,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:55:18,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:55:18" (1/3) ... [2018-01-21 00:55:18,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df8678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:55:18, skipping insertion in model container [2018-01-21 00:55:18,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:55:18" (2/3) ... [2018-01-21 00:55:18,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df8678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:55:18, skipping insertion in model container [2018-01-21 00:55:18,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:55:18" (3/3) ... [2018-01-21 00:55:18,670 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test1_false-valid-free.i [2018-01-21 00:55:18,678 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:55:18,684 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 00:55:18,728 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:55:18,728 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:55:18,728 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:55:18,728 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:55:18,728 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:55:18,729 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:55:18,729 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:55:18,729 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 00:55:18,729 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:55:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 00:55:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 00:55:18,750 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:18,751 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:18,752 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 00:55:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1147143622, now seen corresponding path program 1 times [2018-01-21 00:55:18,760 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:18,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:18,813 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:18,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:18,813 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:55:18,859 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:55:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:55:18,914 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:55:18,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:55:18,915 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:55:18,917 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:55:18,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:55:18,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:55:18,935 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-21 00:55:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:55:19,056 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-01-21 00:55:19,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:55:19,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 00:55:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:55:19,151 INFO L225 Difference]: With dead ends: 29 [2018-01-21 00:55:19,151 INFO L226 Difference]: Without dead ends: 13 [2018-01-21 00:55:19,154 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:55:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-01-21 00:55:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-01-21 00:55:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-01-21 00:55:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2018-01-21 00:55:19,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2018-01-21 00:55:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:55:19,182 INFO L432 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2018-01-21 00:55:19,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:55:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2018-01-21 00:55:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 00:55:19,183 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,183 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:19,183 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 00:55:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1401667384, now seen corresponding path program 1 times [2018-01-21 00:55:19,183 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,186 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,186 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,256 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:55:19,264 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,266 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,276 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:55:19,277 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:55:19,277 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:55:19,277 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:55:19,277 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:55:19,277 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:55:19,277 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:55:19,277 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:55:19,277 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:55:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 00:55:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:55:19,278 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,278 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:55:19,279 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:55:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 54106, now seen corresponding path program 1 times [2018-01-21 00:55:19,279 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,281 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,282 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,293 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:55:19,294 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,296 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:55:19,296 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:55:19,296 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:55:19,296 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:55:19,296 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:55:19,296 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:55:19,296 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:55:19,297 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:55:19,297 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:55:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 00:55:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 00:55:19,299 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,299 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:19,299 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:55:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 926844515, now seen corresponding path program 1 times [2018-01-21 00:55:19,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,302 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,302 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:55:19,337 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:55:19,338 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,339 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,339 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,339 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,340 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:55:19,342 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:55:19,342 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:55:19,342 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:55:19,342 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:55:19,342 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:55:19,342 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:55:19,342 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:55:19,342 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:55:19,342 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:55:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 00:55:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 00:55:19,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,344 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:19,344 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:55:19,344 INFO L82 PathProgramCache]: Analyzing trace with hash 635600625, now seen corresponding path program 1 times [2018-01-21 00:55:19,344 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,346 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:55:19,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:55:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:55:19,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:55:19,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:55:19,396 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:55:19,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:55:19,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:55:19,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:55:19,397 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-21 00:55:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:55:19,465 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-01-21 00:55:19,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:55:19,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-21 00:55:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:55:19,466 INFO L225 Difference]: With dead ends: 29 [2018-01-21 00:55:19,467 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:55:19,467 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:55:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:55:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:55:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:55:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:55:19,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-21 00:55:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:55:19,468 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:55:19,468 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:55:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:55:19,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:55:19,470 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:55:19,471 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:55:19,471 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:55:19,471 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:55:19,471 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:55:19,471 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:55:19,471 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:55:19,471 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 00:55:19,471 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:55:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 00:55:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 00:55:19,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,473 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:19,473 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 00:55:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1372726910, now seen corresponding path program 1 times [2018-01-21 00:55:19,473 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,475 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:55:19,483 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:55:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:55:19,572 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:55:19,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:55:19,573 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:55:19,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:55:19,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:55:19,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:55:19,574 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2018-01-21 00:55:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:55:19,678 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-01-21 00:55:19,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 00:55:19,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-21 00:55:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:55:19,680 INFO L225 Difference]: With dead ends: 36 [2018-01-21 00:55:19,680 INFO L226 Difference]: Without dead ends: 18 [2018-01-21 00:55:19,680 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:55:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-01-21 00:55:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-01-21 00:55:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-01-21 00:55:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-01-21 00:55:19,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 15 [2018-01-21 00:55:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:55:19,684 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-01-21 00:55:19,684 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:55:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-01-21 00:55:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 00:55:19,685 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:55:19,685 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:55:19,685 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 00:55:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2020311876, now seen corresponding path program 1 times [2018-01-21 00:55:19,686 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:55:19,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,687 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:55:19,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:55:19,687 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:55:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:55:19,701 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:55:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:55:19,802 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:55:19,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 00:55:19,803 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:55:19,803 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 00:55:19,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 00:55:19,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:55:19,804 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 8 states. [2018-01-21 00:55:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:55:19,933 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-01-21 00:55:19,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:55:19,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-01-21 00:55:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:55:19,933 INFO L225 Difference]: With dead ends: 18 [2018-01-21 00:55:19,934 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:55:19,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-01-21 00:55:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:55:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:55:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:55:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:55:19,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-21 00:55:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:55:19,936 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:55:19,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 00:55:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:55:19,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:55:19,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:55:19 BoogieIcfgContainer [2018-01-21 00:55:19,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:55:19,941 INFO L168 Benchmark]: Toolchain (without parser) took 1751.23 ms. Allocated memory was 303.0 MB in the beginning and 466.1 MB in the end (delta: 163.1 MB). Free memory was 262.0 MB in the beginning and 367.1 MB in the end (delta: -105.1 MB). Peak memory consumption was 57.9 MB. Max. memory is 5.3 GB. [2018-01-21 00:55:19,943 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 303.0 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:55:19,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.01 ms. Allocated memory is still 303.0 MB. Free memory was 262.0 MB in the beginning and 249.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:55:19,944 INFO L168 Benchmark]: Boogie Preprocessor took 35.82 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 247.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:55:19,944 INFO L168 Benchmark]: RCFGBuilder took 210.04 ms. Allocated memory is still 303.0 MB. Free memory was 247.9 MB in the beginning and 235.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:55:19,945 INFO L168 Benchmark]: TraceAbstraction took 1277.46 ms. Allocated memory was 303.0 MB in the beginning and 466.1 MB in the end (delta: 163.1 MB). Free memory was 233.0 MB in the beginning and 367.1 MB in the end (delta: -134.1 MB). Peak memory consumption was 28.9 MB. Max. memory is 5.3 GB. [2018-01-21 00:55:19,947 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 303.0 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 220.01 ms. Allocated memory is still 303.0 MB. Free memory was 262.0 MB in the beginning and 249.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.82 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 247.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 210.04 ms. Allocated memory is still 303.0 MB. Free memory was 247.9 MB in the beginning and 235.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1277.46 ms. Allocated memory was 303.0 MB in the beginning and 466.1 MB in the end (delta: 163.1 MB). Free memory was 233.0 MB in the beginning and 367.1 MB in the end (delta: -134.1 MB). Peak memory consumption was 28.9 MB. 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) - 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: 1072]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1441] CALL entry_point() [L1435] CALL ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 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 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.0s 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=27occurred 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: [L1441] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] FCALL free(p) VAL [p={0:0}] [L1437] FCALL free(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.0s 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=27occurred 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, 19 NumberOfCodeBlocks, 19 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: 1440]: 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 5 procedures, 27 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 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: 1434]: 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: entry_pointErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 10 SDslu, 27 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 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 proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-55-19-959.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-55-19-959.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-55-19-959.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-55-19-959.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-55-19-959.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_00-55-19-959.csv Received shutdown request...