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_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:53:07,642 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:53:07,644 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:53:07,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:53:07,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:53:07,658 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:53:07,659 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:53:07,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:53:07,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:53:07,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:53:07,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:53:07,665 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:53:07,665 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:53:07,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:53:07,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:53:07,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:53:07,672 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:53:07,674 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:53:07,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:53:07,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:53:07,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:53:07,684 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_preciseopt.epf [2018-01-21 08:53:07,694 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:53:07,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:53:07,695 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:53:07,696 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:53:07,696 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:53:07,696 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:53:07,696 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:53:07,696 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:53:07,697 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:53:07,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:53:07,697 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:53:07,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:53:07,699 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:53:07,699 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:53:07,699 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:53:07,699 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:53:07,699 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:53:07,700 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:53:07,700 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:53:07,700 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:53:07,700 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:53:07,700 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:53:07,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:53:07,701 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:53:07,701 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:53:07,701 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:53:07,701 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:53:07,701 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:53:07,702 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:53:07,702 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:53:07,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:53:07,702 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:53:07,702 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:53:07,703 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:53:07,703 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:53:07,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:53:07,751 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:53:07,755 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:53:07,757 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:53:07,757 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:53:07,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_false-valid-free.i [2018-01-21 08:53:07,961 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:53:07,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:53:07,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:53:07,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:53:07,971 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:53:07,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:53:07" (1/1) ... [2018-01-21 08:53:07,975 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 08:53:07, skipping insertion in model container [2018-01-21 08:53:07,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:53:07" (1/1) ... [2018-01-21 08:53:07,989 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:53:08,036 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:53:08,142 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:53:08,156 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:53:08,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08 WrapperNode [2018-01-21 08:53:08,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:53:08,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:53:08,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:53:08,164 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:53:08,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (1/1) ... [2018-01-21 08:53:08,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:53:08,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:53:08,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:53:08,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:53:08,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (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 08:53:08,247 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:53:08,248 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:53:08,248 INFO L136 BoogieDeclarations]: Found implementation of procedure h_unsafe [2018-01-21 08:53:08,248 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 08:53:08,248 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure h_unsafe [2018-01-21 08:53:08,248 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 08:53:08,249 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:53:08,249 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:53:08,249 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:53:08,357 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:53:08,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:53:08 BoogieIcfgContainer [2018-01-21 08:53:08,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:53:08,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:53:08,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:53:08,362 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:53:08,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:53:07" (1/3) ... [2018-01-21 08:53:08,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6299a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:53:08, skipping insertion in model container [2018-01-21 08:53:08,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:53:08" (2/3) ... [2018-01-21 08:53:08,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6299a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:53:08, skipping insertion in model container [2018-01-21 08:53:08,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:53:08" (3/3) ... [2018-01-21 08:53:08,366 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test3_false-valid-free.i [2018-01-21 08:53:08,375 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:53:08,381 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 08:53:08,425 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:53:08,425 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:53:08,425 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:53:08,425 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:53:08,426 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:53:08,426 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:53:08,426 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:53:08,426 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:53:08,427 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:53:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 08:53:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:53:08,449 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:08,450 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:53:08,450 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:53:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 52857, now seen corresponding path program 1 times [2018-01-21 08:53:08,456 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:08,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,503 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:08,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,503 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:08,558 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:53:08,564 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,569 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:53:08,570 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:53:08,570 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:53:08,570 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:53:08,570 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:53:08,570 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:53:08,570 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:53:08,571 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h_unsafeErr0EnsuresViolation======== [2018-01-21 08:53:08,571 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:53:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 08:53:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-21 08:53:08,573 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:08,573 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:53:08,573 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h_unsafeErr0EnsuresViolation]=== [2018-01-21 08:53:08,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1002359421, now seen corresponding path program 1 times [2018-01-21 08:53:08,574 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:08,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,576 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:08,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,577 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:53:08,593 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:53:08,617 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 08:53:08,619 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:53:08,619 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 08:53:08,619 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:53:08,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:53:08,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:53:08,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:53:08,634 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-01-21 08:53:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:53:08,652 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-01-21 08:53:08,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:53:08,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-21 08:53:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:53:08,739 INFO L225 Difference]: With dead ends: 24 [2018-01-21 08:53:08,739 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:53:08,743 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:53:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:53:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:53:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:53:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:53:08,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-01-21 08:53:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:53:08,766 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:53:08,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:53:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:53:08,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:53:08,768 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:53:08,769 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:53:08,769 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:53:08,769 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:53:08,769 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:53:08,769 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:53:08,769 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:53:08,769 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:53:08,769 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:53:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 08:53:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 08:53:08,771 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:08,771 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 08:53:08,771 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:53:08,771 INFO L82 PathProgramCache]: Analyzing trace with hash 179996649, now seen corresponding path program 1 times [2018-01-21 08:53:08,771 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:08,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:08,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,773 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:08,801 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:53:08,803 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,804 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,804 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,805 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,805 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:08,812 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:53:08,812 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:53:08,813 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:53:08,813 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:53:08,813 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:53:08,813 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:53:08,813 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:53:08,813 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:53:08,813 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:53:08,814 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 08:53:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 08:53:08,814 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:08,815 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:53:08,815 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:53:08,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1966665564, now seen corresponding path program 1 times [2018-01-21 08:53:08,815 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:08,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:08,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,816 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:53:08,825 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:53:08,866 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 08:53:08,867 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:53:08,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:53:08,867 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:53:08,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:53:08,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:53:08,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:53:08,868 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-01-21 08:53:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:53:08,926 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-01-21 08:53:08,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:53:08,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-01-21 08:53:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:53:08,927 INFO L225 Difference]: With dead ends: 26 [2018-01-21 08:53:08,927 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:53:08,928 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 08:53:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:53:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:53:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:53:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:53:08,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 08:53:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:53:08,928 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:53:08,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:53:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:53:08,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:53:08,930 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:53:08,930 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:53:08,930 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:53:08,930 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:53:08,930 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:53:08,930 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:53:08,930 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:53:08,930 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 08:53:08,930 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:53:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 08:53:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 08:53:08,931 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:08,932 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:53:08,932 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 08:53:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1378581262, now seen corresponding path program 1 times [2018-01-21 08:53:08,932 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:08,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,933 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:08,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:08,934 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:53:08,942 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:53:08,964 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 08:53:08,965 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:53:08,965 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:53:08,965 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:53:08,965 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:53:08,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:53:08,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:53:08,966 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-01-21 08:53:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:53:09,010 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-01-21 08:53:09,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:53:09,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-21 08:53:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:53:09,012 INFO L225 Difference]: With dead ends: 26 [2018-01-21 08:53:09,013 INFO L226 Difference]: Without dead ends: 15 [2018-01-21 08:53:09,013 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 08:53:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-01-21 08:53:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-01-21 08:53:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-01-21 08:53:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-01-21 08:53:09,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2018-01-21 08:53:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:53:09,023 INFO L432 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-01-21 08:53:09,023 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:53:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-01-21 08:53:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 08:53:09,023 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:53:09,023 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:53:09,023 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 08:53:09,024 INFO L82 PathProgramCache]: Analyzing trace with hash -213656853, now seen corresponding path program 1 times [2018-01-21 08:53:09,024 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:53:09,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:09,025 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:53:09,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:53:09,025 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:53:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:53:09,045 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:53:09,048 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:09,048 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:09,048 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:53:09,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:53:09 BoogieIcfgContainer [2018-01-21 08:53:09,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:53:09,052 INFO L168 Benchmark]: Toolchain (without parser) took 1090.61 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 260.7 MB in the beginning and 409.4 MB in the end (delta: -148.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 5.3 GB. [2018-01-21 08:53:09,053 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:53:09,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.12 ms. Allocated memory is still 303.6 MB. Free memory was 260.7 MB in the beginning and 248.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:53:09,054 INFO L168 Benchmark]: Boogie Preprocessor took 32.21 ms. Allocated memory is still 303.6 MB. Free memory was 248.6 MB in the beginning and 246.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:53:09,054 INFO L168 Benchmark]: RCFGBuilder took 162.42 ms. Allocated memory is still 303.6 MB. Free memory was 246.6 MB in the beginning and 234.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:53:09,054 INFO L168 Benchmark]: TraceAbstraction took 691.95 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 234.6 MB in the beginning and 409.4 MB in the end (delta: -174.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:53:09,056 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 197.12 ms. Allocated memory is still 303.6 MB. Free memory was 260.7 MB in the beginning and 248.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.21 ms. Allocated memory is still 303.6 MB. Free memory was 248.6 MB in the beginning and 246.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 162.42 ms. Allocated memory is still 303.6 MB. Free memory was 246.6 MB in the beginning and 234.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 691.95 ms. Allocated memory was 303.6 MB in the beginning and 463.5 MB in the end (delta: 159.9 MB). Free memory was 234.6 MB in the beginning and 409.4 MB in the end (delta: -174.8 MB). There was no memory consumed. 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: 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, 24 locations, 5 error locations. UNSAFE Result, 0.1s 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=24occurred 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 - 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: h_unsafeErr0EnsuresViolation CFG has 5 procedures, 24 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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: [L1444] CALL entry_point() [L1439] CALL, EXPR h_unsafe() [L1435] RET return (int *)__VERIFIER_nondet_pointer(); [L1439] EXPR h_unsafe() VAL [h_unsafe()={0:0}] [L1439] int *p = h_unsafe(); [L1440] COND FALSE, RET !(\read(*p)) VAL [p={0:0}] [L1444] entry_point() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 24 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=24occurred 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, 17 NumberOfCodeBlocks, 17 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: 1443]: 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, 24 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 6 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=24occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 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: 1438]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1444] CALL entry_point() [L1439] CALL, EXPR h_unsafe() [L1435] RET return (int *)__VERIFIER_nondet_pointer(); [L1439] EXPR h_unsafe() VAL [h_unsafe()={3:0}] [L1439] int *p = h_unsafe(); [L1440] COND TRUE \read(*p) VAL [p={3:0}] [L1440] FCALL free(p) VAL [p={3:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: entry_pointErr0EnsuresViolation CFG has 5 procedures, 24 locations, 5 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 8 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=24occurred 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, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-53-09-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-53-09-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-53-09-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-53-09-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-53-09-065.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_08-53-09-065.csv Received shutdown request...