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_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:39:43,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:39:43,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:39:43,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:39:43,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:39:43,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:39:43,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:39:43,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:39:43,240 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:39:43,241 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:39:43,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:39:43,242 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:39:43,242 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:39:43,243 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:39:43,244 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:39:43,246 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:39:43,249 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:39:43,251 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:39:43,252 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:39:43,253 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:39:43,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:39:43,261 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:39:43,262 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:39:43,262 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 10:39:43,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:39:43,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:39:43,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:39:43,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:39:43,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:39:43,274 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:39:43,274 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:39:43,275 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:39:43,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:39:43,275 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:39:43,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:39:43,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:39:43,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:39:43,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:39:43,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:39:43,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:39:43,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:39:43,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:39:43,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:39:43,279 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:39:43,280 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:39:43,280 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:39:43,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:39:43,324 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:39:43,327 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:39:43,329 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:39:43,329 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:39:43,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test1_false-valid-free.i [2018-01-21 10:39:43,537 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:39:43,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:39:43,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:39:43,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:39:43,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:39:43,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4b3da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43, skipping insertion in model container [2018-01-21 10:39:43,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,565 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:39:43,612 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:39:43,730 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:39:43,745 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:39:43,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43 WrapperNode [2018-01-21 10:39:43,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:39:43,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:39:43,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:39:43,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:39:43,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (1/1) ... [2018-01-21 10:39:43,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:39:43,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:39:43,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:39:43,790 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:39:43,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (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 10:39:43,840 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:39:43,840 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:39:43,841 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 10:39:43,841 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 10:39:43,841 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:39:43,841 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 10:39:43,842 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 10:39:43,842 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:39:43,842 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:39:43,842 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:39:43,988 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:39:43,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:39:43 BoogieIcfgContainer [2018-01-21 10:39:43,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:39:43,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:39:43,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:39:43,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:39:43,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:39:43" (1/3) ... [2018-01-21 10:39:43,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d902ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:39:43, skipping insertion in model container [2018-01-21 10:39:43,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:43" (2/3) ... [2018-01-21 10:39:43,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d902ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:39:43, skipping insertion in model container [2018-01-21 10:39:43,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:39:43" (3/3) ... [2018-01-21 10:39:43,996 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test1_false-valid-free.i [2018-01-21 10:39:44,003 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:39:44,009 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 10:39:44,058 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:44,058 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:44,059 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:44,059 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:44,059 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:44,059 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:44,059 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:44,059 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 10:39:44,060 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 10:39:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 10:39:44,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,082 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,082 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:39:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1147143622, now seen corresponding path program 1 times [2018-01-21 10:39:44,089 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,138 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,139 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:44,190 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:44,250 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 10:39:44,252 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:39:44,252 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:39:44,252 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:44,254 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:39:44,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:39:44,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:39:44,268 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-21 10:39:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:44,370 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-01-21 10:39:44,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:39:44,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 10:39:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:44,381 INFO L225 Difference]: With dead ends: 29 [2018-01-21 10:39:44,381 INFO L226 Difference]: Without dead ends: 13 [2018-01-21 10:39:44,445 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 10:39:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-01-21 10:39:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-01-21 10:39:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-01-21 10:39:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2018-01-21 10:39:44,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2018-01-21 10:39:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:44,474 INFO L432 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2018-01-21 10:39:44,474 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:39:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2018-01-21 10:39:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 10:39:44,475 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,475 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,475 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:39:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1401667384, now seen corresponding path program 1 times [2018-01-21 10:39:44,475 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,477 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,478 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,548 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:39:44,559 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,560 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,570 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:44,570 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:44,570 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:44,570 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:44,570 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:44,570 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:44,570 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:44,570 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:39:44,570 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 10:39:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:39:44,572 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,572 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:39:44,572 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:39:44,573 INFO L82 PathProgramCache]: Analyzing trace with hash 54106, now seen corresponding path program 1 times [2018-01-21 10:39:44,573 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,575 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,575 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,587 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:39:44,588 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,590 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:44,590 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:44,590 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:44,591 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:44,591 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:44,591 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:44,591 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:44,591 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:39:44,591 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 10:39:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 10:39:44,593 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,593 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,593 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:39:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash 926844515, now seen corresponding path program 1 times [2018-01-21 10:39:44,594 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,595 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,596 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:39:44,633 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:39:44,636 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,637 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,638 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,638 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,638 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:39:44,641 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:44,641 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:44,641 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:44,642 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:44,642 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:44,642 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:44,642 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:44,642 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:39:44,642 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 10:39:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 10:39:44,645 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,645 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,645 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:39:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash 635600625, now seen corresponding path program 1 times [2018-01-21 10:39:44,645 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,647 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,647 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:44,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:44,699 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 10:39:44,727 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:39:44,727 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:39:44,727 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:44,728 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:39:44,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:39:44,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:39:44,728 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-21 10:39:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:44,788 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-01-21 10:39:44,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:39:44,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-21 10:39:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:44,789 INFO L225 Difference]: With dead ends: 29 [2018-01-21 10:39:44,789 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:39:44,789 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 10:39:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:39:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:39:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:39:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:39:44,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-21 10:39:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:44,790 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:39:44,790 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:39:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:39:44,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:39:44,792 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:44,793 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:44,793 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:44,793 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:44,793 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:44,793 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:44,793 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:44,793 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 10:39:44,793 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 10:39:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 10:39:44,795 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,795 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,795 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:39:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1372726910, now seen corresponding path program 1 times [2018-01-21 10:39:44,795 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,797 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,797 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:44,807 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:44,894 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 10:39:44,894 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:39:44,894 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:39:44,894 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:44,895 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:39:44,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:39:44,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:39:44,895 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2018-01-21 10:39:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:44,994 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-01-21 10:39:44,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:39:44,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-21 10:39:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:44,995 INFO L225 Difference]: With dead ends: 36 [2018-01-21 10:39:44,995 INFO L226 Difference]: Without dead ends: 18 [2018-01-21 10:39:44,996 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:39:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-01-21 10:39:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-01-21 10:39:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-01-21 10:39:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-01-21 10:39:45,000 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 15 [2018-01-21 10:39:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:45,000 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-01-21 10:39:45,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:39:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-01-21 10:39:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 10:39:45,001 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:45,001 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:45,001 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:39:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2020311876, now seen corresponding path program 1 times [2018-01-21 10:39:45,002 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:45,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:45,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:45,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:45,004 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:45,017 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:45,105 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 10:39:45,106 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:39:45,106 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 10:39:45,106 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:45,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 10:39:45,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 10:39:45,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:39:45,109 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 8 states. [2018-01-21 10:39:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:45,311 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-01-21 10:39:45,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 10:39:45,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-01-21 10:39:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:45,312 INFO L225 Difference]: With dead ends: 18 [2018-01-21 10:39:45,312 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:39:45,313 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 10:39:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:39:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:39:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:39:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:39:45,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-21 10:39:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:45,314 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:39:45,314 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 10:39:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:39:45,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:39:45,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:39:45 BoogieIcfgContainer [2018-01-21 10:39:45,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:39:45,317 INFO L168 Benchmark]: Toolchain (without parser) took 1780.22 ms. Allocated memory was 306.2 MB in the beginning and 465.0 MB in the end (delta: 158.9 MB). Free memory was 261.3 MB in the beginning and 366.8 MB in the end (delta: -105.5 MB). Peak memory consumption was 53.4 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:45,319 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 306.2 MB. Free memory is still 268.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:39:45,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.23 ms. Allocated memory is still 306.2 MB. Free memory was 261.3 MB in the beginning and 249.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:45,319 INFO L168 Benchmark]: Boogie Preprocessor took 34.30 ms. Allocated memory is still 306.2 MB. Free memory was 249.1 MB in the beginning and 247.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:45,320 INFO L168 Benchmark]: RCFGBuilder took 199.80 ms. Allocated memory is still 306.2 MB. Free memory was 247.1 MB in the beginning and 234.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:45,320 INFO L168 Benchmark]: TraceAbstraction took 1326.79 ms. Allocated memory was 306.2 MB in the beginning and 465.0 MB in the end (delta: 158.9 MB). Free memory was 234.1 MB in the beginning and 366.8 MB in the end (delta: -132.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:45,322 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 306.2 MB. Free memory is still 268.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.23 ms. Allocated memory is still 306.2 MB. Free memory was 261.3 MB in the beginning and 249.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.30 ms. Allocated memory is still 306.2 MB. Free memory was 249.1 MB in the beginning and 247.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 199.80 ms. Allocated memory is still 306.2 MB. Free memory was 247.1 MB in the beginning and 234.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1326.79 ms. Allocated memory was 306.2 MB in the beginning and 465.0 MB in the end (delta: 158.9 MB). Free memory was 234.1 MB in the beginning and 366.8 MB in the end (delta: -132.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1072]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1441] CALL entry_point() [L1435] CALL ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1441] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] FCALL free(p) VAL [p={0:0}] [L1437] FCALL free(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1440]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1434]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: entry_pointErr0EnsuresViolation CFG has 5 procedures, 27 locations, 5 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 10 SDslu, 27 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-39-45-332.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-39-45-332.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-39-45-332.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-39-45-332.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-39-45-332.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_10-39-45-332.csv Received shutdown request...