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_test1_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:41:34,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:41:34,048 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:41:34,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:41:34,065 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:41:34,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:41:34,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:41:34,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:41:34,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:41:34,072 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:41:34,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:41:34,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:41:34,074 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:41:34,075 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:41:34,076 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:41:34,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:41:34,082 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:41:34,084 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:41:34,085 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:41:34,087 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:41:34,089 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:41:34,089 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:41:34,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:41:34,090 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:41:34,091 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:41:34,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:41:34,093 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:41:34,094 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:41:34,094 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:41:34,094 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:41:34,095 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:41:34,097 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 10:41:34,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:41:34,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:41:34,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:41:34,109 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:41:34,109 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:41:34,110 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:41:34,110 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:41:34,110 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:41:34,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:41:34,111 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:41:34,111 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:41:34,111 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:41:34,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:41:34,112 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:41:34,113 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:41:34,113 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:41:34,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:41:34,113 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:41:34,113 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:41:34,114 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:41:34,114 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:41:34,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:41:34,114 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:41:34,114 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:41:34,115 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:41:34,116 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:41:34,116 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:41:34,117 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:41:34,117 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:41:34,154 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:41:34,167 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:41:34,172 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:41:34,173 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:41:34,174 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:41:34,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test1_true-valid-memsafety_true-termination.i [2018-01-21 10:41:34,397 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:41:34,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:41:34,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:41:34,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:41:34,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:41:34,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a8c6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34, skipping insertion in model container [2018-01-21 10:41:34,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,434 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:41:34,482 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:41:34,600 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:41:34,615 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:41:34,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34 WrapperNode [2018-01-21 10:41:34,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:41:34,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:41:34,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:41:34,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:41:34,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... [2018-01-21 10:41:34,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:41:34,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:41:34,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:41:34,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:41:34,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:41:34,711 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:41:34,712 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:41:34,712 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 10:41:34,712 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 10:41:34,712 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:41:34,712 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:41:34,713 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 10:41:34,713 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 10:41:34,713 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:41:34,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:41:34,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:41:34,849 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:41:34,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:41:34 BoogieIcfgContainer [2018-01-21 10:41:34,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:41:34,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:41:34,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:41:34,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:41:34,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:41:34" (1/3) ... [2018-01-21 10:41:34,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258c27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:41:34, skipping insertion in model container [2018-01-21 10:41:34,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:34" (2/3) ... [2018-01-21 10:41:34,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258c27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:41:34, skipping insertion in model container [2018-01-21 10:41:34,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:41:34" (3/3) ... [2018-01-21 10:41:34,856 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test1_true-valid-memsafety_true-termination.i [2018-01-21 10:41:34,864 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:41:34,871 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 10:41:34,909 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:41:34,910 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:41:34,910 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:41:34,910 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:41:34,910 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:41:34,910 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:41:34,910 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:41:34,910 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 10:41:34,911 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:41:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 10:41:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 10:41:34,941 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:34,942 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:34,942 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:41:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash 426570983, now seen corresponding path program 1 times [2018-01-21 10:41:34,949 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,001 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,002 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,002 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:41:35,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:41:35,096 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 10:41:35,098 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:41:35,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:41:35,099 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:41:35,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:41:35,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:41:35,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:41:35,116 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2018-01-21 10:41:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:41:35,234 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-01-21 10:41:35,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:41:35,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 10:41:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:41:35,245 INFO L225 Difference]: With dead ends: 28 [2018-01-21 10:41:35,245 INFO L226 Difference]: Without dead ends: 13 [2018-01-21 10:41:35,314 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 10:41:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-01-21 10:41:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-01-21 10:41:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-01-21 10:41:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2018-01-21 10:41:35,344 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2018-01-21 10:41:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:41:35,344 INFO L432 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2018-01-21 10:41:35,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:41:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2018-01-21 10:41:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 10:41:35,345 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,345 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:35,346 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:41:35,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1912728489, now seen corresponding path program 1 times [2018-01-21 10:41:35,346 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,348 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,420 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:41:35,430 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,432 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,442 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:41:35,442 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:41:35,442 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:41:35,442 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:41:35,442 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:41:35,442 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:41:35,442 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:41:35,442 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:41:35,443 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:41:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 10:41:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:41:35,444 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,444 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:41:35,444 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:41:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash 53145, now seen corresponding path program 1 times [2018-01-21 10:41:35,445 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,446 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,447 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,458 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:41:35,459 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,461 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:41:35,461 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:41:35,461 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:41:35,462 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:41:35,462 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:41:35,462 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:41:35,462 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:41:35,462 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:41:35,462 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:41:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 10:41:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 10:41:35,464 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,464 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:35,464 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:41:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash 940505860, now seen corresponding path program 1 times [2018-01-21 10:41:35,465 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,466 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,466 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:41:35,500 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:41:35,503 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,504 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,504 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,505 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,505 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:41:35,507 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:41:35,507 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:41:35,508 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:41:35,508 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:41:35,508 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:41:35,508 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:41:35,508 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:41:35,508 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:41:35,508 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:41:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 10:41:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 10:41:35,510 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,510 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:35,510 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:41:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2050415695, now seen corresponding path program 1 times [2018-01-21 10:41:35,511 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,512 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,512 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:41:35,524 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:41:35,556 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 10:41:35,556 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:41:35,556 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:41:35,556 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:41:35,556 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:41:35,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:41:35,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:41:35,557 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2018-01-21 10:41:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:41:35,639 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-01-21 10:41:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:41:35,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-21 10:41:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:41:35,640 INFO L225 Difference]: With dead ends: 28 [2018-01-21 10:41:35,640 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:41:35,641 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 10:41:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:41:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:41:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:41:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:41:35,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-01-21 10:41:35,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:41:35,642 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:41:35,642 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:41:35,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:41:35,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:41:35,645 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:41:35,645 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:41:35,645 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:41:35,645 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:41:35,645 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:41:35,645 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:41:35,646 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:41:35,646 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 10:41:35,646 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:41:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 10:41:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 10:41:35,648 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,648 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:35,648 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:41:35,648 INFO L82 PathProgramCache]: Analyzing trace with hash -24479971, now seen corresponding path program 1 times [2018-01-21 10:41:35,648 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,650 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,650 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:41:35,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:41:35,743 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 10:41:35,744 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:41:35,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:41:35,744 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:41:35,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:41:35,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:41:35,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:41:35,745 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2018-01-21 10:41:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:41:35,861 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-01-21 10:41:35,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:41:35,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-01-21 10:41:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:41:35,862 INFO L225 Difference]: With dead ends: 34 [2018-01-21 10:41:35,862 INFO L226 Difference]: Without dead ends: 17 [2018-01-21 10:41:35,862 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 10:41:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-01-21 10:41:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-01-21 10:41:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-01-21 10:41:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2018-01-21 10:41:35,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2018-01-21 10:41:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:41:35,865 INFO L432 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2018-01-21 10:41:35,865 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:41:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2018-01-21 10:41:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 10:41:35,866 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:41:35,866 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:41:35,866 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:41:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2107491105, now seen corresponding path program 1 times [2018-01-21 10:41:35,866 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:41:35,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,867 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:41:35,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:41:35,868 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:41:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:41:35,880 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:41:35,980 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 10:41:35,981 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:41:35,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 10:41:35,981 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:41:35,981 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 10:41:35,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 10:41:35,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:41:35,982 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 8 states. [2018-01-21 10:41:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:41:36,118 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2018-01-21 10:41:36,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 10:41:36,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-01-21 10:41:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:41:36,119 INFO L225 Difference]: With dead ends: 17 [2018-01-21 10:41:36,119 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:41:36,120 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 10:41:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:41:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:41:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:41:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:41:36,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-01-21 10:41:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:41:36,121 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:41:36,121 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 10:41:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:41:36,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:41:36,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:41:36 BoogieIcfgContainer [2018-01-21 10:41:36,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:41:36,125 INFO L168 Benchmark]: Toolchain (without parser) took 1727.28 ms. Allocated memory was 306.2 MB in the beginning and 461.9 MB in the end (delta: 155.7 MB). Free memory was 263.5 MB in the beginning and 365.1 MB in the end (delta: -101.6 MB). Peak memory consumption was 54.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:41:36,126 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:41:36,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.61 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 251.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:41:36,126 INFO L168 Benchmark]: Boogie Preprocessor took 34.12 ms. Allocated memory is still 306.2 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:41:36,127 INFO L168 Benchmark]: RCFGBuilder took 191.02 ms. Allocated memory is still 306.2 MB. Free memory was 249.3 MB in the beginning and 236.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:41:36,127 INFO L168 Benchmark]: TraceAbstraction took 1273.50 ms. Allocated memory was 306.2 MB in the beginning and 461.9 MB in the end (delta: 155.7 MB). Free memory was 236.7 MB in the beginning and 365.1 MB in the end (delta: -128.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:41:36,129 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 220.61 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 251.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.12 ms. Allocated memory is still 306.2 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 191.02 ms. Allocated memory is still 306.2 MB. Free memory was 249.3 MB in the beginning and 236.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1273.50 ms. Allocated memory was 306.2 MB in the beginning and 461.9 MB in the end (delta: 155.7 MB). Free memory was 236.7 MB in the beginning and 365.1 MB in the end (delta: -128.5 MB). Peak memory consumption was 27.2 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: [L1439] CALL entry_point() [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 5 procedures, 26 locations, 5 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 16 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=26occurred 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, 26 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=26occurred 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: [L1439] CALL entry_point() [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] FCALL free(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 26 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=26occurred 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, 18 NumberOfCodeBlocks, 18 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: 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: mainErr0EnsuresViolation CFG has 5 procedures, 26 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 16 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=26occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 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: 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: entry_pointErr0EnsuresViolation CFG has 5 procedures, 26 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, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1575 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_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-41-36-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-41-36-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-41-36-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-41-36-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-41-36-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_10-41-36-139.csv Received shutdown request...