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_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:27:39,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:27:39,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:27:40,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:27:40,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:27:40,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:27:40,033 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:27:40,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:27:40,282 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:27:40,283 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:27:40,284 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:27:40,284 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:27:40,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:27:40,287 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:27:40,288 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:27:41,092 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:27:41,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:27:41,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:27:41,559 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:27:41,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:27:41,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 03:27:41,591 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_mostprecise.epf [2018-01-21 03:27:41,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:27:41,617 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:27:41,618 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:27:41,618 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:27:41,618 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:27:41,618 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:27:41,618 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:27:41,619 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:27:41,619 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:27:41,620 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:27:41,620 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:27:41,620 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:27:41,620 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:27:41,620 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:27:41,620 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:27:41,621 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:27:41,621 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:27:41,621 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:27:41,621 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:27:41,621 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:27:41,622 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:27:41,622 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:27:41,622 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:27:41,622 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:27:41,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:27:41,622 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:27:41,623 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:27:41,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:27:41,623 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:27:41,623 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:27:41,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:27:41,624 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:27:41,625 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:27:41,626 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:27:41,626 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:27:41,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:27:41,718 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:27:41,723 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:27:41,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:27:41,726 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:27:41,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_false-valid-free.i [2018-01-21 03:27:42,021 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:27:42,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:27:42,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:27:42,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:27:42,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:27:42,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ed51d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42, skipping insertion in model container [2018-01-21 03:27:42,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,051 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:27:42,117 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:27:42,266 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:27:42,283 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:27:42,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42 WrapperNode [2018-01-21 03:27:42,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:27:42,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:27:42,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:27:42,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:27:42,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (1/1) ... [2018-01-21 03:27:42,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:27:42,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:27:42,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:27:42,336 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:27:42,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (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 03:27:42,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:27:42,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:27:42,430 INFO L136 BoogieDeclarations]: Found implementation of procedure h_unsafe [2018-01-21 03:27:42,431 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 03:27:42,431 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:27:42,431 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:27:42,431 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:27:42,431 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:27:42,431 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2018-01-21 03:27:42,432 INFO L128 BoogieDeclarations]: Found specification of procedure h_unsafe [2018-01-21 03:27:42,432 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 03:27:42,432 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:27:42,432 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:27:42,432 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:27:42,705 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:27:42,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:27:42 BoogieIcfgContainer [2018-01-21 03:27:42,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:27:42,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:27:42,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:27:42,710 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:27:42,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:27:42" (1/3) ... [2018-01-21 03:27:42,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c75bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:27:42, skipping insertion in model container [2018-01-21 03:27:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:27:42" (2/3) ... [2018-01-21 03:27:42,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c75bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:27:42, skipping insertion in model container [2018-01-21 03:27:42,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:27:42" (3/3) ... [2018-01-21 03:27:42,717 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test3_false-valid-free.i [2018-01-21 03:27:42,725 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:27:42,733 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 03:27:42,811 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:27:42,811 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:27:42,811 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:27:42,811 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:27:42,812 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:27:42,812 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:27:42,812 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:27:42,812 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:27:42,813 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:27:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 03:27:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:27:42,863 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:42,864 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:27:42,864 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:27:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash 52857, now seen corresponding path program 1 times [2018-01-21 03:27:42,887 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:42,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:42,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:42,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:42,942 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,058 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:27:43,077 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,089 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:27:43,089 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:27:43,089 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:27:43,090 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:27:43,090 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:27:43,090 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:27:43,090 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:27:43,090 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h_unsafeErr0EnsuresViolation======== [2018-01-21 03:27:43,090 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:27:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 03:27:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-21 03:27:43,092 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:43,093 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:27:43,093 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h_unsafeErr0EnsuresViolation]=== [2018-01-21 03:27:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1002359421, now seen corresponding path program 1 times [2018-01-21 03:27:43,093 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:43,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,103 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:43,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,103 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:27:43,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:27:43,152 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 03:27:43,153 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:27:43,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 03:27:43,154 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:27:43,156 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:27:43,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:27:43,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:27:43,178 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-01-21 03:27:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:27:43,305 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-01-21 03:27:43,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:27:43,306 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-21 03:27:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:27:43,315 INFO L225 Difference]: With dead ends: 24 [2018-01-21 03:27:43,316 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 03:27:43,319 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 03:27:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 03:27:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 03:27:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 03:27:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 03:27:43,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-01-21 03:27:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:27:43,350 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 03:27:43,351 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:27:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 03:27:43,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:27:43,353 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:27:43,353 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:27:43,353 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:27:43,353 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:27:43,353 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:27:43,354 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:27:43,354 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:27:43,354 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:27:43,354 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:27:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 03:27:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 03:27:43,356 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:43,356 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 03:27:43,356 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:27:43,356 INFO L82 PathProgramCache]: Analyzing trace with hash 179996649, now seen corresponding path program 1 times [2018-01-21 03:27:43,356 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:43,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:43,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,358 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,385 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:27:43,387 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,388 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,388 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,389 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,389 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,398 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:27:43,398 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:27:43,398 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:27:43,398 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:27:43,398 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:27:43,398 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:27:43,399 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:27:43,399 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:27:43,399 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:27:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 03:27:43,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 03:27:43,401 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:43,401 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:27:43,402 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:27:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1966665564, now seen corresponding path program 1 times [2018-01-21 03:27:43,402 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:43,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,404 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:43,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,404 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:27:43,418 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:27:43,478 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 03:27:43,478 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:27:43,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:27:43,479 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:27:43,479 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 03:27:43,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 03:27:43,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:27:43,480 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-01-21 03:27:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:27:43,571 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-01-21 03:27:43,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 03:27:43,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-01-21 03:27:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:27:43,573 INFO L225 Difference]: With dead ends: 26 [2018-01-21 03:27:43,573 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 03:27:43,573 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 03:27:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 03:27:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 03:27:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 03:27:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 03:27:43,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 03:27:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:27:43,575 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 03:27:43,575 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 03:27:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 03:27:43,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:27:43,577 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:27:43,577 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:27:43,577 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:27:43,577 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:27:43,577 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:27:43,577 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:27:43,577 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:27:43,578 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 03:27:43,578 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:27:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-21 03:27:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 03:27:43,579 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:43,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:27:43,580 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 03:27:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1378581262, now seen corresponding path program 1 times [2018-01-21 03:27:43,580 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:43,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:43,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:27:43,595 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:27:43,617 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 03:27:43,618 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:27:43,618 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:27:43,618 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:27:43,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 03:27:43,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 03:27:43,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:27:43,619 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-01-21 03:27:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:27:43,664 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-01-21 03:27:43,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 03:27:43,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-21 03:27:43,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:27:43,668 INFO L225 Difference]: With dead ends: 26 [2018-01-21 03:27:43,668 INFO L226 Difference]: Without dead ends: 15 [2018-01-21 03:27:43,668 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 03:27:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-01-21 03:27:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-01-21 03:27:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-01-21 03:27:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-01-21 03:27:43,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2018-01-21 03:27:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:27:43,680 INFO L432 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-01-21 03:27:43,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 03:27:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-01-21 03:27:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 03:27:43,681 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:27:43,681 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:27:43,681 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 03:27:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash -213656853, now seen corresponding path program 1 times [2018-01-21 03:27:43,681 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:27:43,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:27:43,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:27:43,683 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:27:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:27:43,709 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:27:43,721 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,722 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,723 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:27:43,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 03:27:43 BoogieIcfgContainer [2018-01-21 03:27:43,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 03:27:43,730 INFO L168 Benchmark]: Toolchain (without parser) took 1708.04 ms. Allocated memory was 306.7 MB in the beginning and 439.4 MB in the end (delta: 132.6 MB). Free memory was 263.9 MB in the beginning and 386.2 MB in the end (delta: -122.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. [2018-01-21 03:27:43,735 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 306.7 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:27:43,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.94 ms. Allocated memory is still 306.7 MB. Free memory was 263.9 MB in the beginning and 251.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. [2018-01-21 03:27:43,736 INFO L168 Benchmark]: Boogie Preprocessor took 41.81 ms. Allocated memory is still 306.7 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:27:43,737 INFO L168 Benchmark]: RCFGBuilder took 370.48 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 237.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:27:43,739 INFO L168 Benchmark]: TraceAbstraction took 1021.78 ms. Allocated memory was 306.7 MB in the beginning and 439.4 MB in the end (delta: 132.6 MB). Free memory was 237.7 MB in the beginning and 386.2 MB in the end (delta: -148.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:27:43,741 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 306.7 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 265.94 ms. Allocated memory is still 306.7 MB. Free memory was 263.9 MB in the beginning and 251.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.81 ms. Allocated memory is still 306.7 MB. Free memory was 251.7 MB in the beginning and 249.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 370.48 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 237.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1021.78 ms. Allocated memory was 306.7 MB in the beginning and 439.4 MB in the end (delta: 132.6 MB). Free memory was 237.7 MB in the beginning and 386.2 MB in the end (delta: -148.5 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, 0.2s 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, 0.2s 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_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_03-27-43-770.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_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_03-27-43-770.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_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_03-27-43-770.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_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_03-27-43-770.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_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_03-27-43-770.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_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_03-27-43-770.csv Received shutdown request...