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/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:46:42,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:46:42,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:46:42,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:46:42,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:46:42,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:46:42,084 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:46:42,086 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:46:42,088 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:46:42,089 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:46:42,090 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:46:42,090 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:46:42,091 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:46:42,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:46:42,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:46:42,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:46:42,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:46:42,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:46:42,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:46:42,103 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:46:42,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:46:42,110 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:46:42,111 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:46:42,111 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 02:46:42,120 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:46:42,121 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:46:42,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:46:42,122 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:46:42,122 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:46:42,122 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:46:42,122 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:46:42,122 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:46:42,122 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:46:42,123 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:46:42,123 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:46:42,123 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:46:42,123 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:46:42,123 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:46:42,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:46:42,125 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:46:42,125 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:46:42,125 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:46:42,125 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:46:42,126 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:46:42,126 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:46:42,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:46:42,127 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:46:42,127 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:46:42,128 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:46:42,128 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:46:42,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:46:42,173 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:46:42,176 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:46:42,178 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:46:42,178 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:46:42,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-21 02:46:42,345 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:46:42,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:46:42,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:46:42,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:46:42,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:46:42,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7344226a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42, skipping insertion in model container [2018-01-21 02:46:42,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,376 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:46:42,415 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:46:42,535 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:46:42,550 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:46:42,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42 WrapperNode [2018-01-21 02:46:42,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:46:42,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:46:42,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:46:42,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:46:42,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (1/1) ... [2018-01-21 02:46:42,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:46:42,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:46:42,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:46:42,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:46:42,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (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 02:46:42,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:46:42,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:46:42,641 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:46:42,641 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:46:42,642 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:46:42,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:46:42,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:46:42,965 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:46:42,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:46:42 BoogieIcfgContainer [2018-01-21 02:46:42,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:46:42,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:46:42,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:46:42,968 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:46:42,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:46:42" (1/3) ... [2018-01-21 02:46:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dad8ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:46:42, skipping insertion in model container [2018-01-21 02:46:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:46:42" (2/3) ... [2018-01-21 02:46:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dad8ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:46:42, skipping insertion in model container [2018-01-21 02:46:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:46:42" (3/3) ... [2018-01-21 02:46:42,972 INFO L105 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-21 02:46:42,978 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:46:42,985 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 02:46:43,027 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:46:43,027 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:46:43,027 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:46:43,028 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:46:43,028 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:46:43,028 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:46:43,028 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:46:43,028 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 02:46:43,029 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:46:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 02:46:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 02:46:43,066 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:46:43,067 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 02:46:43,069 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 02:46:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash 109556, now seen corresponding path program 1 times [2018-01-21 02:46:43,078 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:46:43,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,121 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:46:43,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,121 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:46:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:46:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:46:43,180 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:46:43,186 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:46:43,200 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:46:43,200 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:46:43,200 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:46:43,201 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:46:43,201 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:46:43,201 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:46:43,201 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:46:43,201 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 02:46:43,201 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:46:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 02:46:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 02:46:43,204 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:46:43,204 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:46:43,205 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:46:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 964801099, now seen corresponding path program 1 times [2018-01-21 02:46:43,205 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:46:43,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,207 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:46:43,207 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,207 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:46:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:46:43,251 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:46:43,303 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 02:46:43,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:46:43,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:46:43,306 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:46:43,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:46:43,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:46:43,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:46:43,442 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-21 02:46:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:46:43,469 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-01-21 02:46:43,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:46:43,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 02:46:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:46:43,480 INFO L225 Difference]: With dead ends: 70 [2018-01-21 02:46:43,481 INFO L226 Difference]: Without dead ends: 42 [2018-01-21 02:46:43,484 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 02:46:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-21 02:46:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-21 02:46:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-21 02:46:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-01-21 02:46:43,526 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2018-01-21 02:46:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:46:43,526 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-01-21 02:46:43,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:46:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-01-21 02:46:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 02:46:43,527 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:46:43,527 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] [2018-01-21 02:46:43,528 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:46:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash -342950740, now seen corresponding path program 1 times [2018-01-21 02:46:43,528 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:46:43,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,530 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:46:43,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,530 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:46:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:46:43,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:46:43,770 WARN L146 SmtUtils]: Spent 102ms on a formula simplification. DAG size of input: 16 DAG size of output 8 [2018-01-21 02:46:43,774 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 02:46:43,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:46:43,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 02:46:43,775 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:46:43,783 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 02:46:43,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 02:46:43,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 02:46:43,784 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 3 states. [2018-01-21 02:46:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:46:43,863 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2018-01-21 02:46:43,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 02:46:43,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 02:46:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:46:43,868 INFO L225 Difference]: With dead ends: 109 [2018-01-21 02:46:43,868 INFO L226 Difference]: Without dead ends: 75 [2018-01-21 02:46:43,869 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 02:46:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-21 02:46:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2018-01-21 02:46:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-21 02:46:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-01-21 02:46:43,877 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 25 [2018-01-21 02:46:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:46:43,877 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-01-21 02:46:43,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 02:46:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-01-21 02:46:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 02:46:43,880 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:46:43,880 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] [2018-01-21 02:46:43,880 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:46:43,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1957871850, now seen corresponding path program 1 times [2018-01-21 02:46:43,881 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:46:43,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,882 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:46:43,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:43,882 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:46:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:46:43,905 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:46:43,954 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 02:46:43,955 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:46:43,955 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 02:46:43,955 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:46:43,955 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 02:46:43,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 02:46:43,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-21 02:46:43,956 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 4 states. [2018-01-21 02:46:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:46:44,011 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-01-21 02:46:44,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 02:46:44,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-21 02:46:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:46:44,013 INFO L225 Difference]: With dead ends: 75 [2018-01-21 02:46:44,013 INFO L226 Difference]: Without dead ends: 52 [2018-01-21 02:46:44,014 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-21 02:46:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-21 02:46:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-01-21 02:46:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-21 02:46:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-01-21 02:46:44,021 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 25 [2018-01-21 02:46:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:46:44,021 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-01-21 02:46:44,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 02:46:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-01-21 02:46:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 02:46:44,023 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:46:44,023 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] [2018-01-21 02:46:44,023 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:46:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -92922, now seen corresponding path program 1 times [2018-01-21 02:46:44,024 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:46:44,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:44,025 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:46:44,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:46:44,025 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:46:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:46:44,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:46:44,478 WARN L146 SmtUtils]: Spent 141ms on a formula simplification. DAG size of input: 64 DAG size of output 32 [2018-01-21 02:46:44,742 WARN L146 SmtUtils]: Spent 234ms on a formula simplification. DAG size of input: 71 DAG size of output 39 [2018-01-21 02:46:44,978 WARN L146 SmtUtils]: Spent 199ms on a formula simplification. DAG size of input: 71 DAG size of output 39 [2018-01-21 02:46:45,298 WARN L146 SmtUtils]: Spent 292ms on a formula simplification. DAG size of input: 62 DAG size of output 36 [2018-01-21 02:46:45,452 WARN L146 SmtUtils]: Spent 125ms on a formula simplification. DAG size of input: 59 DAG size of output 29 [2018-01-21 02:46:45,507 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 02:46:45,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:46:45,507 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:46:45,509 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 02:46:45,511 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [18], [20], [21], [25], [28], [30], [31], [40], [42], [46], [47], [51], [53], [54], [61], [65], [78], [79], [80], [81], [83], [84], [85], [86] [2018-01-21 02:46:45,572 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:46:45,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 02:47:52,120 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 02:47:52,121 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 02:47:52,122 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 02:47:52,122 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:47:52,123 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 02:47:52,132 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:47:52,133 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 02:47:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:47:52,170 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 02:47:52,195 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 02:47:52,196 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 02:47:52,198 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:47:52,198 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:47:52,199 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:47:52,199 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:47:52,199 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:47:52,199 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:47:52,199 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:47:52,199 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 02:47:52,199 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:47:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 02:47:52,201 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 02:47:52,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 02:47:52 BoogieIcfgContainer [2018-01-21 02:47:52,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 02:47:52,203 INFO L168 Benchmark]: Toolchain (without parser) took 69857.77 ms. Allocated memory was 306.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 264.0 MB in the beginning and 830.6 MB in the end (delta: -566.6 MB). Peak memory consumption was 855.8 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:52,205 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 306.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:47:52,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.00 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 254.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:52,205 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 ms. Allocated memory is still 306.7 MB. Free memory was 254.1 MB in the beginning and 252.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:52,206 INFO L168 Benchmark]: RCFGBuilder took 377.19 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 235.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:52,206 INFO L168 Benchmark]: TraceAbstraction took 69235.90 ms. Allocated memory was 306.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 235.5 MB in the beginning and 830.6 MB in the end (delta: -595.1 MB). Peak memory consumption was 827.3 MB. Max. memory is 5.3 GB. [2018-01-21 02:47:52,208 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 306.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.00 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 254.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.53 ms. Allocated memory is still 306.7 MB. Free memory was 254.1 MB in the beginning and 252.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 377.19 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 235.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 69235.90 ms. Allocated memory was 306.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 235.5 MB in the beginning and 830.6 MB in the end (delta: -595.1 MB). Peak memory consumption was 827.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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, 45 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=45occurred 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 31 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 45 locations, 3 error locations. TIMEOUT Result, 68.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 87 SDslu, 69 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 66.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2137 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: 540]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 540). Cancelled while IsEmpty was searching accepting run (input had 45 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 45 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=45occurred 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/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_02-47-52-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_02-47-52-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_02-47-52-217.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_02-47-52-217.csv Completed graceful shutdown