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_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_2_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:40:52,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:40:52,935 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:40:52,949 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:40:52,950 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:40:52,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:40:52,951 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:40:52,952 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:40:52,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:40:52,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:40:52,955 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:40:52,955 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:40:52,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:40:52,957 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:40:52,957 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:40:52,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:40:52,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:40:52,964 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:40:52,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:40:52,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:40:52,968 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:40:52,973 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:40:52,974 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:40:52,974 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_smtcomp.epf [2018-01-21 10:40:52,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:40:52,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:40:52,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:40:52,985 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:40:52,985 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:40:52,985 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:40:52,985 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:40:52,986 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:40:52,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:40:52,986 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:40:52,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:40:52,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:40:52,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:40:52,988 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:40:52,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:40:52,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:40:52,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:40:52,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:40:52,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:40:52,989 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:40:52,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:40:52,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:40:52,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:40:52,990 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:40:52,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:40:52,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:40:52,991 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:40:52,992 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:40:52,992 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:40:53,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:40:53,040 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:40:53,044 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:40:53,046 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:40:53,046 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:40:53,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_2_false-valid-memtrack_true-termination.i [2018-01-21 10:40:53,247 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:40:53,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:40:53,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:40:53,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:40:53,261 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:40:53,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f922628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53, skipping insertion in model container [2018-01-21 10:40:53,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,286 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:40:53,338 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:40:53,454 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:40:53,468 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:40:53,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53 WrapperNode [2018-01-21 10:40:53,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:40:53,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:40:53,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:40:53,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:40:53,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (1/1) ... [2018-01-21 10:40:53,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:40:53,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:40:53,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:40:53,514 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:40:53,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (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 10:40:53,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:40:53,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:40:53,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 10:40:53,568 INFO L136 BoogieDeclarations]: Found implementation of procedure f5 [2018-01-21 10:40:53,568 INFO L136 BoogieDeclarations]: Found implementation of procedure g5 [2018-01-21 10:40:53,568 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 10:40:53,568 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:40:53,568 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure f5 [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure g5 [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:40:53,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:40:53,741 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:40:53,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:40:53 BoogieIcfgContainer [2018-01-21 10:40:53,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:40:53,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:40:53,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:40:53,744 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:40:53,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:40:53" (1/3) ... [2018-01-21 10:40:53,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3edd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:40:53, skipping insertion in model container [2018-01-21 10:40:53,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:40:53" (2/3) ... [2018-01-21 10:40:53,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3edd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:40:53, skipping insertion in model container [2018-01-21 10:40:53,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:40:53" (3/3) ... [2018-01-21 10:40:53,747 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test5_2_false-valid-memtrack_true-termination.i [2018-01-21 10:40:53,753 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:40:53,759 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-21 10:40:53,808 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:53,808 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:53,809 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:53,809 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:53,809 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:53,809 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:53,809 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:53,809 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 10:40:53,810 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 10:40:53,835 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:53,836 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:53,836 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:40:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1245989314, now seen corresponding path program 1 times [2018-01-21 10:40:53,842 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:53,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:53,892 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:53,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:53,892 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:53,944 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,006 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 10:40:54,009 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:40:54,009 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,012 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:40:54,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:40:54,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:40:54,030 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:40:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,152 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:40:54,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:40:54,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-21 10:40:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,223 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:40:54,223 INFO L226 Difference]: Without dead ends: 14 [2018-01-21 10:40:54,226 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 10:40:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-21 10:40:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-21 10:40:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-21 10:40:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-21 10:40:54,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-21 10:40:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,255 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-21 10:40:54,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:40:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-21 10:40:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 10:40:54,256 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,256 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,256 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:40:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash 900052320, now seen corresponding path program 1 times [2018-01-21 10:40:54,257 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,259 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,259 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,322 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:40:54,330 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,332 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,340 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,340 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,340 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,340 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,340 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,340 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,341 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,341 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:40:54,341 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:40:54,342 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,343 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:40:54,343 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:40:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash 70987, now seen corresponding path program 1 times [2018-01-21 10:40:54,343 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,345 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,345 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,345 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,354 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:40:54,354 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,356 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,356 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,356 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,356 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,356 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,356 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,356 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,356 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:40:54,356 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 10:40:54,358 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,358 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,359 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:40:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash -446752331, now seen corresponding path program 1 times [2018-01-21 10:40:54,359 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,360 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:40:54,393 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:40:54,395 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,396 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,397 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,398 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,398 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,398 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,399 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:40:54,403 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,403 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,403 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,403 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,403 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,404 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,404 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,404 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:40:54,404 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 10:40:54,407 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,407 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,407 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:40:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1022997667, now seen corresponding path program 1 times [2018-01-21 10:40:54,407 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,409 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,409 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:54,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,476 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 10:40:54,476 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:40:54,477 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:40:54,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:40:54,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:40:54,478 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:40:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,527 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:40:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:40:54,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-21 10:40:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,528 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:40:54,528 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:40:54,529 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 10:40:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:40:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:40:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:40:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:40:54,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-21 10:40:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,530 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:40:54,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:40:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:40:54,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:40:54,532 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,532 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,532 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,532 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,533 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,533 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,533 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,533 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 10:40:54,533 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 10:40:54,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,536 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,536 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:40:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1744079337, now seen corresponding path program 1 times [2018-01-21 10:40:54,536 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,538 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:54,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,593 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 10:40:54,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:40:54,593 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,593 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:40:54,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:40:54,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:40:54,594 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:40:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,652 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:40:54,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:40:54,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-21 10:40:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,653 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:40:54,653 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:40:54,653 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 10:40:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:40:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:40:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:40:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:40:54,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 10:40:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,654 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:40:54,654 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:40:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:40:54,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:40:54,656 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,656 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,656 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,656 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,657 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,657 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,657 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,657 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == g5Err0EnsuresViolation======== [2018-01-21 10:40:54,657 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 10:40:54,659 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,660 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,660 INFO L371 AbstractCegarLoop]: === Iteration 1 === [g5Err0EnsuresViolation]=== [2018-01-21 10:40:54,660 INFO L82 PathProgramCache]: Analyzing trace with hash -780307178, now seen corresponding path program 1 times [2018-01-21 10:40:54,660 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,662 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:54,672 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,695 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 10:40:54,696 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,696 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:40:54,696 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,696 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:40:54,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:40:54,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:40:54,697 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:40:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,748 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:40:54,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:40:54,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 10:40:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,749 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:40:54,750 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 10:40:54,750 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 10:40:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 10:40:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 10:40:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 10:40:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-01-21 10:40:54,755 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-01-21 10:40:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,758 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-01-21 10:40:54,758 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:40:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-01-21 10:40:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:40:54,759 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,759 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,759 INFO L371 AbstractCegarLoop]: === Iteration 2 === [g5Err0EnsuresViolation]=== [2018-01-21 10:40:54,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1580278232, now seen corresponding path program 1 times [2018-01-21 10:40:54,759 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,760 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,760 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,761 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:54,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,843 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 10:40:54,844 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 10:40:54,844 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,844 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 10:40:54,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 10:40:54,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:40:54,845 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2018-01-21 10:40:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,880 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-01-21 10:40:54,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 10:40:54,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-21 10:40:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,880 INFO L225 Difference]: With dead ends: 24 [2018-01-21 10:40:54,880 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:40:54,882 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:40:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:40:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:40:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:40:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:40:54,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 10:40:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,883 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:40:54,883 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 10:40:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:40:54,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:40:54,884 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:40:54,884 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:40:54,885 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:40:54,885 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:40:54,885 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:40:54,885 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:40:54,885 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:40:54,885 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == f5Err0EnsuresViolation======== [2018-01-21 10:40:54,885 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:40:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:40:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 10:40:54,887 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:40:54,887 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:40:54,888 INFO L371 AbstractCegarLoop]: === Iteration 1 === [f5Err0EnsuresViolation]=== [2018-01-21 10:40:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2134696014, now seen corresponding path program 1 times [2018-01-21 10:40:54,888 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:40:54,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,889 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:40:54,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:40:54,890 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:40:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:40:54,897 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:40:54,915 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 10:40:54,915 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:40:54,915 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:40:54,915 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:40:54,915 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:40:54,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:40:54,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:40:54,916 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:40:54,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:40:54,978 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:40:54,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:40:54,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 10:40:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:40:54,979 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:40:54,979 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:40:54,980 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 10:40:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:40:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:40:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:40:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:40:54,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 10:40:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:40:54,980 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:40:54,981 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:40:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:40:54,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:40:54,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:40:54 BoogieIcfgContainer [2018-01-21 10:40:54,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:40:54,984 INFO L168 Benchmark]: Toolchain (without parser) took 1736.09 ms. Allocated memory was 307.2 MB in the beginning and 466.6 MB in the end (delta: 159.4 MB). Free memory was 264.5 MB in the beginning and 356.6 MB in the end (delta: -92.0 MB). Peak memory consumption was 67.4 MB. Max. memory is 5.3 GB. [2018-01-21 10:40:54,985 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:40:54,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.16 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 251.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:40:54,985 INFO L168 Benchmark]: Boogie Preprocessor took 37.59 ms. Allocated memory is still 307.2 MB. Free memory was 251.5 MB in the beginning and 250.5 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-21 10:40:54,985 INFO L168 Benchmark]: RCFGBuilder took 227.48 ms. Allocated memory is still 307.2 MB. Free memory was 250.5 MB in the beginning and 235.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. [2018-01-21 10:40:54,986 INFO L168 Benchmark]: TraceAbstraction took 1240.92 ms. Allocated memory was 307.2 MB in the beginning and 466.6 MB in the end (delta: 159.4 MB). Free memory was 235.6 MB in the beginning and 356.6 MB in the end (delta: -120.9 MB). Peak memory consumption was 38.5 MB. Max. memory is 5.3 GB. [2018-01-21 10:40:54,987 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 222.16 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 251.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.59 ms. Allocated memory is still 307.2 MB. Free memory was 251.5 MB in the beginning and 250.5 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 227.48 ms. Allocated memory is still 307.2 MB. Free memory was 250.5 MB in the beginning and 235.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1240.92 ms. Allocated memory was 307.2 MB in the beginning and 466.6 MB in the end (delta: 159.4 MB). Free memory was 235.6 MB in the beginning and 356.6 MB in the end (delta: -120.9 MB). Peak memory consumption was 38.5 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) - 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: [L1450] CALL entry_point() [L1445] CALL f5() [L1434] 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 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 17 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=37occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 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 7 procedures, 37 locations, 7 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=37occurred 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: [L1450] CALL entry_point() [L1445] CALL, EXPR f5() [L1434] 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] [L1434] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1434] int *p = (int *)ldv_malloc(sizeof(int)); [L1435] RET return 0; VAL [\result={0:0}, p={0:0}] [L1445] EXPR f5() VAL [f5()={0:0}] [L1445] int *p = f5(); [L1446] CALL g5(p) VAL [p={0:0}] [L1439] COND FALSE !(\read(*p)) VAL [p={0:0}, p={0:0}] [L1446] FCALL g5(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 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=37occurred 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, 26 NumberOfCodeBlocks, 26 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: 1449]: 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 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1403 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: 1444]: 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 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 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: 1438]: 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: g5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 12 SDslu, 92 SDs, 0 SdLazy, 30 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1595 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 - PositiveResult [Line: 1433]: 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: f5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 15 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=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_10-40-54-998.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-6-2018-01-21_10-40-54-998.csv Received shutdown request...