java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:57:33,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:57:33,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:57:33,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:57:33,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:57:33,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:57:33,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:57:33,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:57:33,297 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:57:33,298 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:57:33,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:57:33,318 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-21 00:57:33,328 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:57:33,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:57:33,329 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:57:33,330 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:57:33,330 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:57:33,330 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:57:33,330 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:57:33,330 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:57:33,331 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:57:33,331 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:57:33,331 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:57:33,332 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:57:33,332 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:57:33,332 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:57:33,332 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:57:33,332 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:57:33,333 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:57:33,333 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:57:33,333 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:57:33,333 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:57:33,333 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:57:33,334 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:57:33,334 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:57:33,334 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:57:33,334 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:57:33,334 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:57:33,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:57:33,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:57:33,335 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:57:33,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:57:33,335 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:57:33,336 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:57:33,336 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:57:33,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:57:33,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:57:33,336 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:57:33,337 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:57:33,337 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:57:33,338 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:57:33,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:57:33,383 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:57:33,387 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:57:33,389 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:57:33,389 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:57:33,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i [2018-01-21 00:57:33,591 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:57:33,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:57:33,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:57:33,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:57:33,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:57:33,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f922628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33, skipping insertion in model container [2018-01-21 00:57:33,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,628 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:57:33,682 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:57:33,790 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:57:33,802 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:57:33,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33 WrapperNode [2018-01-21 00:57:33,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:57:33,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:57:33,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:57:33,810 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:57:33,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... [2018-01-21 00:57:33,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:57:33,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:57:33,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:57:33,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:57:33,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:57:33,888 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:57:33,889 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:57:33,889 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 00:57:33,889 INFO L136 BoogieDeclarations]: Found implementation of procedure h_safe [2018-01-21 00:57:33,889 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 00:57:33,889 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:57:33,889 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:57:33,889 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:57:33,889 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:57:33,889 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure h_safe [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:57:33,890 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:57:34,044 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:57:34,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:57:34 BoogieIcfgContainer [2018-01-21 00:57:34,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:57:34,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:57:34,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:57:34,047 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:57:34,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:57:33" (1/3) ... [2018-01-21 00:57:34,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0e680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:57:34, skipping insertion in model container [2018-01-21 00:57:34,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:57:33" (2/3) ... [2018-01-21 00:57:34,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0e680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:57:34, skipping insertion in model container [2018-01-21 00:57:34,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:57:34" (3/3) ... [2018-01-21 00:57:34,050 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test3_true-valid-memsafety_true-termination.i [2018-01-21 00:57:34,056 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:57:34,062 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 00:57:34,105 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:34,105 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:34,106 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:34,106 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:34,106 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:34,106 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:34,106 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:34,106 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 00:57:34,107 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 00:57:34,130 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,131 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:34,131 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 00:57:34,137 INFO L82 PathProgramCache]: Analyzing trace with hash 381050145, now seen corresponding path program 1 times [2018-01-21 00:57:34,140 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,190 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,190 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:34,237 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:34,293 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:34,294 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:57:34,294 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:34,296 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:57:34,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:57:34,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:34,314 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 00:57:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:34,458 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 00:57:34,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:57:34,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-21 00:57:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:34,468 INFO L225 Difference]: With dead ends: 36 [2018-01-21 00:57:34,468 INFO L226 Difference]: Without dead ends: 14 [2018-01-21 00:57:34,531 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-21 00:57:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-21 00:57:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-21 00:57:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-21 00:57:34,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-21 00:57:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:34,560 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-21 00:57:34,560 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:57:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-21 00:57:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 00:57:34,561 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,561 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:34,561 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 00:57:34,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1116876131, now seen corresponding path program 1 times [2018-01-21 00:57:34,562 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,564 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,628 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:57:34,635 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,637 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,646 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:34,647 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:34,647 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:34,647 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:34,647 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:34,647 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:34,647 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:34,647 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:57:34,647 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:57:34,649 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,649 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:57:34,649 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:57:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash 62755, now seen corresponding path program 1 times [2018-01-21 00:57:34,649 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,651 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,660 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:57:34,661 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,663 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:34,663 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:34,663 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:34,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:34,663 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:34,663 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:34,663 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:34,663 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:57:34,664 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 00:57:34,665 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,666 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:34,666 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:57:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -264557971, now seen corresponding path program 1 times [2018-01-21 00:57:34,666 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,667 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,668 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:57:34,699 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:57:34,702 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,703 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,704 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,704 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,704 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,705 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:57:34,708 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:34,708 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:34,708 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:34,708 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:34,709 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:34,709 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:34,709 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:34,709 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:57:34,709 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 00:57:34,712 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,712 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:34,712 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:57:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash -880721244, now seen corresponding path program 1 times [2018-01-21 00:57:34,712 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,714 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:34,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:34,772 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:34,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:57:34,773 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:34,773 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:57:34,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:57:34,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:34,774 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 00:57:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:34,875 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 00:57:34,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:57:34,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 00:57:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:34,876 INFO L225 Difference]: With dead ends: 36 [2018-01-21 00:57:34,876 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:57:34,877 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:57:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:57:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:57:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:57:34,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 00:57:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:34,878 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:57:34,878 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:57:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:57:34,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:57:34,881 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:34,882 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:34,882 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:34,882 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:34,882 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:34,882 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:34,882 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:34,882 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h_safeErr0EnsuresViolation======== [2018-01-21 00:57:34,882 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 00:57:34,885 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:34,885 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:34,885 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h_safeErr0EnsuresViolation]=== [2018-01-21 00:57:34,885 INFO L82 PathProgramCache]: Analyzing trace with hash 266316619, now seen corresponding path program 1 times [2018-01-21 00:57:34,886 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:34,887 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,887 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:34,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:34,888 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:34,898 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:34,937 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:34,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:57:34,937 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:34,938 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:57:34,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:57:34,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:34,938 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 00:57:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:35,025 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 00:57:35,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:57:35,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 00:57:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:35,026 INFO L225 Difference]: With dead ends: 36 [2018-01-21 00:57:35,026 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:57:35,026 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:57:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:57:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:57:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:57:35,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 00:57:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:35,027 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:57:35,027 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:57:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:57:35,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:57:35,029 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:57:35,029 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:57:35,029 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:57:35,029 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:57:35,029 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:57:35,029 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:57:35,029 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:57:35,029 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 00:57:35,029 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:57:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 00:57:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 00:57:35,031 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:35,031 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 00:57:35,031 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 00:57:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1983438874, now seen corresponding path program 1 times [2018-01-21 00:57:35,031 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:35,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,032 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:35,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,032 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:35,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:35,067 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:35,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:57:35,067 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:35,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:57:35,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:57:35,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:35,068 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 00:57:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:35,107 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 00:57:35,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:57:35,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-01-21 00:57:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:35,109 INFO L225 Difference]: With dead ends: 36 [2018-01-21 00:57:35,109 INFO L226 Difference]: Without dead ends: 23 [2018-01-21 00:57:35,110 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:57:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-21 00:57:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-01-21 00:57:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-21 00:57:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-01-21 00:57:35,114 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2018-01-21 00:57:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:35,114 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-01-21 00:57:35,114 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:57:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-01-21 00:57:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 00:57:35,115 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:35,115 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:35,116 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 00:57:35,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1357059945, now seen corresponding path program 1 times [2018-01-21 00:57:35,116 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:35,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,118 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:35,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,118 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:35,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:35,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:35,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 00:57:35,266 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:35,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 00:57:35,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 00:57:35,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:57:35,268 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2018-01-21 00:57:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:35,285 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-01-21 00:57:35,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 00:57:35,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-21 00:57:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:35,286 INFO L225 Difference]: With dead ends: 32 [2018-01-21 00:57:35,286 INFO L226 Difference]: Without dead ends: 22 [2018-01-21 00:57:35,287 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:57:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-01-21 00:57:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-01-21 00:57:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-21 00:57:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2018-01-21 00:57:35,292 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 19 [2018-01-21 00:57:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:35,292 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2018-01-21 00:57:35,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 00:57:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2018-01-21 00:57:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 00:57:35,293 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:57:35,294 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:57:35,294 INFO L371 AbstractCegarLoop]: === Iteration 3 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 00:57:35,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1167295915, now seen corresponding path program 1 times [2018-01-21 00:57:35,294 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:57:35,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:57:35,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:57:35,296 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:57:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:57:35,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:57:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:57:35,436 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:57:35,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 00:57:35,436 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:57:35,437 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 00:57:35,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 00:57:35,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-21 00:57:35,437 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 10 states. [2018-01-21 00:57:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:57:35,626 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-01-21 00:57:35,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 00:57:35,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-01-21 00:57:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:57:35,628 INFO L225 Difference]: With dead ends: 22 [2018-01-21 00:57:35,628 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:57:35,629 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-01-21 00:57:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:57:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:57:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:57:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:57:35,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 00:57:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:57:35,630 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:57:35,630 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 00:57:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:57:35,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:57:35,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:57:35 BoogieIcfgContainer [2018-01-21 00:57:35,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:57:35,633 INFO L168 Benchmark]: Toolchain (without parser) took 2041.81 ms. Allocated memory was 299.9 MB in the beginning and 454.0 MB in the end (delta: 154.1 MB). Free memory was 257.2 MB in the beginning and 321.1 MB in the end (delta: -63.8 MB). Peak memory consumption was 90.3 MB. Max. memory is 5.3 GB. [2018-01-21 00:57:35,634 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:57:35,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.55 ms. Allocated memory is still 299.9 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:57:35,635 INFO L168 Benchmark]: Boogie Preprocessor took 31.12 ms. Allocated memory is still 299.9 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:57:35,635 INFO L168 Benchmark]: RCFGBuilder took 203.26 ms. Allocated memory is still 299.9 MB. Free memory was 243.2 MB in the beginning and 229.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:57:35,635 INFO L168 Benchmark]: TraceAbstraction took 1587.46 ms. Allocated memory was 299.9 MB in the beginning and 454.0 MB in the end (delta: 154.1 MB). Free memory was 229.5 MB in the beginning and 321.1 MB in the end (delta: -91.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 5.3 GB. [2018-01-21 00:57:35,636 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.55 ms. Allocated memory is still 299.9 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.12 ms. Allocated memory is still 299.9 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 203.26 ms. Allocated memory is still 299.9 MB. Free memory was 243.2 MB in the beginning and 229.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1587.46 ms. Allocated memory was 299.9 MB in the beginning and 454.0 MB in the end (delta: 154.1 MB). Free memory was 229.5 MB in the beginning and 321.1 MB in the end (delta: -91.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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: [L1443] CALL entry_point() [L1438] CALL h_safe() [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 6 procedures, 32 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 14 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=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 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=32occurred 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: [L1443] CALL entry_point() [L1438] CALL, EXPR h_safe() [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] RET return (int *)ldv_malloc(sizeof(int)); [L1438] EXPR h_safe() VAL [h_safe()={0:0}] [L1438] int *p = h_safe(); [L1439] COND FALSE, RET !(\read(*p)) VAL [p={0:0}] [L1443] entry_point() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 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=32occurred 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, 22 NumberOfCodeBlocks, 22 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: 1442]: 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 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 931 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: h_safeErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 7 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 12 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=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1437]: 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 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 9 SDslu, 123 SDs, 0 SdLazy, 143 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 3917 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_00-57-35-647.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_00-57-35-647.csv Received shutdown request...