java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:44:00,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:44:00,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:44:00,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:44:00,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:44:00,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:44:00,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:44:00,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:44:00,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:44:00,243 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:44:00,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:44:00,244 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:44:00,245 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:44:00,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:44:00,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:44:00,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:44:00,251 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:44:00,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:44:00,255 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:44:00,256 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:44:00,258 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:44:00,263 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:44:00,264 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:44:00,264 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:44:00,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:44:00,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:44:00,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:44:00,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:44:00,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:44:00,274 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:44:00,274 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:44:00,274 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:44:00,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:44:00,275 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:44:00,275 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:44:00,275 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:44:00,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:44:00,275 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:44:00,276 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:44:00,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:44:00,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:44:00,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:44:00,277 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:44:00,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:44:00,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:44:00,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:44:00,278 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:44:00,279 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:44:00,279 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:44:00,279 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:44:00,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:44:00,321 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:44:00,325 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:44:00,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:44:00,326 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:44:00,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:44:00,508 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:44:00,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:44:00,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:44:00,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:44:00,521 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:44:00,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b942210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00, skipping insertion in model container [2018-01-21 10:44:00,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,545 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:44:00,588 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:44:00,712 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:44:00,738 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:44:00,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00 WrapperNode [2018-01-21 10:44:00,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:44:00,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:44:00,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:44:00,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:44:00,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... [2018-01-21 10:44:00,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:44:00,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:44:00,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:44:00,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:44:00,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:44:00,834 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:44:00,835 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:44:00,835 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:44:00,835 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:44:00,836 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:44:00,837 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:44:01,150 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:44:01,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:44:01 BoogieIcfgContainer [2018-01-21 10:44:01,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:44:01,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:44:01,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:44:01,153 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:44:01,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:44:00" (1/3) ... [2018-01-21 10:44:01,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd1996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:44:01, skipping insertion in model container [2018-01-21 10:44:01,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:44:00" (2/3) ... [2018-01-21 10:44:01,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd1996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:44:01, skipping insertion in model container [2018-01-21 10:44:01,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:44:01" (3/3) ... [2018-01-21 10:44:01,156 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 10:44:01,163 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:44:01,171 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:44:01,221 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:44:01,221 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:44:01,221 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:44:01,222 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:44:01,222 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:44:01,222 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:44:01,222 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:44:01,222 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:44:01,223 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:44:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 10:44:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:44:01,247 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:44:01,247 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:44:01,248 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:44:01,252 INFO L82 PathProgramCache]: Analyzing trace with hash 192421, now seen corresponding path program 1 times [2018-01-21 10:44:01,254 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:44:01,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:44:01,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,295 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:44:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:44:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:44:01,357 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:44:01,363 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:44:01,370 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:44:01,370 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:44:01,370 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:44:01,370 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:44:01,370 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:44:01,371 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:44:01,371 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:44:01,371 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:44:01,371 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:44:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 10:44:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 10:44:01,376 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:44:01,377 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:44:01,377 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:44:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash 722719466, now seen corresponding path program 1 times [2018-01-21 10:44:01,377 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:44:01,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:44:01,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,378 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:44:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:44:01,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:44:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:44:01,543 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:44:01,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:44:01,544 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:44:01,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:44:01,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:44:01,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:44:01,562 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-01-21 10:44:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:44:01,584 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2018-01-21 10:44:01,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:44:01,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-01-21 10:44:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:44:01,598 INFO L225 Difference]: With dead ends: 133 [2018-01-21 10:44:01,598 INFO L226 Difference]: Without dead ends: 73 [2018-01-21 10:44:01,601 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 10:44:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-21 10:44:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-01-21 10:44:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 10:44:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-21 10:44:01,636 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 31 [2018-01-21 10:44:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:44:01,636 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-21 10:44:01,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:44:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-21 10:44:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 10:44:01,638 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:44:01,638 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:44:01,638 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:44:01,638 INFO L82 PathProgramCache]: Analyzing trace with hash 387707444, now seen corresponding path program 1 times [2018-01-21 10:44:01,638 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:44:01,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,639 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:44:01,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:01,639 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:44:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:44:01,672 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:44:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:44:01,780 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:44:01,780 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:44:01,780 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:44:01,782 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:44:01,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:44:01,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:44:01,783 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 5 states. [2018-01-21 10:44:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:44:01,987 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2018-01-21 10:44:01,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:44:01,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-21 10:44:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:44:01,993 INFO L225 Difference]: With dead ends: 118 [2018-01-21 10:44:01,993 INFO L226 Difference]: Without dead ends: 113 [2018-01-21 10:44:01,994 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:44:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-21 10:44:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2018-01-21 10:44:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-21 10:44:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2018-01-21 10:44:02,006 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2018-01-21 10:44:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:44:02,007 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2018-01-21 10:44:02,007 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:44:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2018-01-21 10:44:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 10:44:02,009 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:44:02,009 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:44:02,009 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:44:02,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1479512725, now seen corresponding path program 1 times [2018-01-21 10:44:02,009 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:44:02,010 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:02,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:44:02,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:02,011 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:44:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:44:02,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:44:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:44:02,113 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:44:02,113 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:44:02,114 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:44:02,114 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:44:02,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:44:02,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:44:02,115 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 5 states. [2018-01-21 10:44:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:44:02,399 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-21 10:44:02,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:44:02,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-21 10:44:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:44:02,401 INFO L225 Difference]: With dead ends: 144 [2018-01-21 10:44:02,402 INFO L226 Difference]: Without dead ends: 139 [2018-01-21 10:44:02,402 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:44:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-21 10:44:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 75. [2018-01-21 10:44:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-21 10:44:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2018-01-21 10:44:02,412 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 41 [2018-01-21 10:44:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:44:02,413 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2018-01-21 10:44:02,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:44:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2018-01-21 10:44:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 10:44:02,415 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:44:02,415 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:44:02,415 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:44:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash -832067523, now seen corresponding path program 1 times [2018-01-21 10:44:02,415 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:44:02,416 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:02,416 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:44:02,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:44:02,417 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:44:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:44:02,442 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:44:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:44:02,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:44:02,640 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:44:02,642 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-01-21 10:44:02,644 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [29], [32], [33], [34], [35], [36], [37], [38], [78], [82], [84], [87], [95], [96], [100], [104], [137], [141], [145], [147], [148], [149], [150], [154], [155], [157], [158], [163], [164], [165], [166], [167] [2018-01-21 10:44:02,707 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:44:02,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:45:07,228 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:45:07,228 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:45:07,248 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:45:07,248 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:45:07,248 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 10:45:07,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:45:07,254 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:45:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:45:07,327 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:45:07,335 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:45:07,336 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:45:07,339 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:45:07,339 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:45:07,339 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:45:07,339 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:45:07,339 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:45:07,340 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:45:07,340 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:45:07,340 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:45:07,340 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:45:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 10:45:07,342 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:45:07,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:45:07 BoogieIcfgContainer [2018-01-21 10:45:07,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:45:07,345 INFO L168 Benchmark]: Toolchain (without parser) took 66836.39 ms. Allocated memory was 308.3 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 267.2 MB in the beginning and 889.8 MB in the end (delta: -622.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-21 10:45:07,346 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:45:07,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 255.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:45:07,346 INFO L168 Benchmark]: Boogie Preprocessor took 37.13 ms. Allocated memory is still 308.3 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:45:07,346 INFO L168 Benchmark]: RCFGBuilder took 364.53 ms. Allocated memory is still 308.3 MB. Free memory was 253.2 MB in the beginning and 226.3 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 5.3 GB. [2018-01-21 10:45:07,347 INFO L168 Benchmark]: TraceAbstraction took 66192.24 ms. Allocated memory was 308.3 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 226.3 MB in the beginning and 889.8 MB in the end (delta: -663.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 10:45:07,349 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 255.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.13 ms. Allocated memory is still 308.3 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 364.53 ms. Allocated memory is still 308.3 MB. Free memory was 253.2 MB in the beginning and 226.3 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 66192.24 ms. Allocated memory was 308.3 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 226.3 MB in the beginning and 889.8 MB in the end (delta: -663.6 MB). Peak memory consumption was 1.3 GB. 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) * 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 3 procedures, 79 locations, 3 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=79occurred 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 - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 43 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 79 locations, 3 error locations. TIMEOUT Result, 65.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 235 SDtfs, 287 SDslu, 278 SDs, 0 SdLazy, 158 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 87 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 9244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 986]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 986). Cancelled while IsEmpty was searching accepting run (input had 79 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 79 locations, 3 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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: 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/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-45-07-356.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-45-07-356.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-45-07-356.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-45-07-356.csv Completed graceful shutdown