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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 05:19:20,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 05:19:20,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 05:19:20,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 05:19:20,306 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 05:19:20,307 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 05:19:20,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 05:19:20,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 05:19:20,311 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 05:19:20,312 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 05:19:20,313 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 05:19:20,313 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 05:19:20,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 05:19:20,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 05:19:20,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 05:19:20,319 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 05:19:20,321 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 05:19:20,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 05:19:20,325 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 05:19:20,326 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 05:19:20,328 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 05:19:20,328 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 05:19:20,328 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 05:19:20,330 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 05:19:20,330 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 05:19:20,332 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 05:19:20,332 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 05:19:20,333 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 05:19:20,333 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 05:19:20,333 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 05:19:20,334 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 05:19:20,334 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-25 05:19:20,343 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 05:19:20,343 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 05:19:20,344 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 05:19:20,344 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 05:19:20,344 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 05:19:20,344 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 05:19:20,344 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 05:19:20,344 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 05:19:20,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 05:19:20,345 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 05:19:20,346 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 05:19:20,346 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 05:19:20,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 05:19:20,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 05:19:20,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 05:19:20,347 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 05:19:20,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 05:19:20,347 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 05:19:20,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 05:19:20,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 05:19:20,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 05:19:20,348 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 05:19:20,348 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 05:19:20,349 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 05:19:20,349 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 05:19:20,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 05:19:20,391 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 05:19:20,394 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 05:19:20,395 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 05:19:20,396 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 05:19:20,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-25 05:19:20,548 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 05:19:20,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 05:19:20,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 05:19:20,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 05:19:20,559 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 05:19:20,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d63a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20, skipping insertion in model container [2018-01-25 05:19:20,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,575 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:19:20,610 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:19:20,726 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:19:20,743 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:19:20,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20 WrapperNode [2018-01-25 05:19:20,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 05:19:20,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 05:19:20,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 05:19:20,750 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 05:19:20,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (1/1) ... [2018-01-25 05:19:20,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 05:19:20,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 05:19:20,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 05:19:20,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 05:19:20,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (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 [2018-01-25 05:19:20,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 05:19:20,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 05:19:20,837 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 05:19:20,837 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 05:19:20,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 05:19:21,075 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 05:19:21,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:19:21 BoogieIcfgContainer [2018-01-25 05:19:21,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 05:19:21,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 05:19:21,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 05:19:21,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 05:19:21,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 05:19:20" (1/3) ... [2018-01-25 05:19:21,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b26de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:19:21, skipping insertion in model container [2018-01-25 05:19:21,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:19:20" (2/3) ... [2018-01-25 05:19:21,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b26de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:19:21, skipping insertion in model container [2018-01-25 05:19:21,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:19:21" (3/3) ... [2018-01-25 05:19:21,081 INFO L105 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-25 05:19:21,087 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 05:19:21,092 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-01-25 05:19:21,138 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 05:19:21,139 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 05:19:21,139 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 05:19:21,139 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 05:19:21,139 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 05:19:21,139 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 05:19:21,139 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 05:19:21,139 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 05:19:21,140 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 05:19:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-25 05:19:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 05:19:21,166 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:19:21,167 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:19:21,167 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-25 05:19:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash -506470517, now seen corresponding path program 1 times [2018-01-25 05:19:21,172 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:19:21,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,211 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:19:21,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:19:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:19:21,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:19:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:19:21,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:19:21,305 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 05:19:21,306 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:19:21,308 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 05:19:21,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 05:19:21,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 05:19:21,320 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-01-25 05:19:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:19:21,419 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2018-01-25 05:19:21,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 05:19:21,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-25 05:19:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:19:21,431 INFO L225 Difference]: With dead ends: 101 [2018-01-25 05:19:21,431 INFO L226 Difference]: Without dead ends: 60 [2018-01-25 05:19:21,434 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 [2018-01-25 05:19:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-25 05:19:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-25 05:19:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-25 05:19:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-25 05:19:21,463 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 12 [2018-01-25 05:19:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:19:21,464 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-25 05:19:21,464 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 05:19:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-25 05:19:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 05:19:21,465 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:19:21,465 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:19:21,465 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-25 05:19:21,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258408, now seen corresponding path program 1 times [2018-01-25 05:19:21,466 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:19:21,467 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,467 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:19:21,467 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,467 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:19:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:19:21,486 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:19:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:19:21,535 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:19:21,535 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:19:21,536 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:19:21,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:19:21,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:19:21,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:19:21,538 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2018-01-25 05:19:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:19:21,648 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-01-25 05:19:21,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:19:21,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 05:19:21,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:19:21,650 INFO L225 Difference]: With dead ends: 60 [2018-01-25 05:19:21,651 INFO L226 Difference]: Without dead ends: 56 [2018-01-25 05:19:21,652 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:19:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-25 05:19:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-25 05:19:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-25 05:19:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-01-25 05:19:21,659 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2018-01-25 05:19:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:19:21,660 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-01-25 05:19:21,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:19:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-01-25 05:19:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 05:19:21,660 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:19:21,661 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:19:21,661 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-25 05:19:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258409, now seen corresponding path program 1 times [2018-01-25 05:19:21,661 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:19:21,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,662 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:19:21,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,663 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:19:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:19:21,678 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:19:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:19:21,727 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:19:21,727 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:19:21,727 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:19:21,727 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:19:21,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:19:21,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:19:21,728 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 4 states. [2018-01-25 05:19:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:19:21,787 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-25 05:19:21,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:19:21,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 05:19:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:19:21,789 INFO L225 Difference]: With dead ends: 102 [2018-01-25 05:19:21,789 INFO L226 Difference]: Without dead ends: 68 [2018-01-25 05:19:21,789 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 [2018-01-25 05:19:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-25 05:19:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2018-01-25 05:19:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-25 05:19:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-01-25 05:19:21,797 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2018-01-25 05:19:21,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:19:21,798 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-01-25 05:19:21,798 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:19:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-01-25 05:19:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 05:19:21,799 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:19:21,799 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:19:21,799 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-25 05:19:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258450, now seen corresponding path program 1 times [2018-01-25 05:19:21,799 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:19:21,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,801 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:19:21,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:21,801 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:19:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:19:21,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:19:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:19:22,026 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:19:22,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 05:19:22,026 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:19:22,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 05:19:22,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 05:19:22,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-25 05:19:22,027 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2018-01-25 05:19:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:19:22,140 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-25 05:19:22,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:19:22,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-01-25 05:19:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:19:22,142 INFO L225 Difference]: With dead ends: 68 [2018-01-25 05:19:22,142 INFO L226 Difference]: Without dead ends: 65 [2018-01-25 05:19:22,142 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-25 05:19:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-25 05:19:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-01-25 05:19:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-25 05:19:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-25 05:19:22,147 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 13 [2018-01-25 05:19:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:19:22,147 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-25 05:19:22,147 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 05:19:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-25 05:19:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 05:19:22,148 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:19:22,148 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:19:22,148 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-25 05:19:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1619006049, now seen corresponding path program 1 times [2018-01-25 05:19:22,148 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:19:22,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:22,149 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:19:22,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:19:22,149 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:19:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 05:19:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 05:19:22,200 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 05:19:22,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 05:19:22 BoogieIcfgContainer [2018-01-25 05:19:22,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 05:19:22,218 INFO L168 Benchmark]: Toolchain (without parser) took 1668.86 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 263.1 MB in the beginning and 380.4 MB in the end (delta: -117.3 MB). Peak memory consumption was 44.7 MB. Max. memory is 5.3 GB. [2018-01-25 05:19:22,219 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 305.1 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 05:19:22,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.83 ms. Allocated memory is still 305.1 MB. Free memory was 262.1 MB in the beginning and 252.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-25 05:19:22,219 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 05:19:22,219 INFO L168 Benchmark]: RCFGBuilder took 294.46 ms. Allocated memory is still 305.1 MB. Free memory was 250.0 MB in the beginning and 230.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. [2018-01-25 05:19:22,220 INFO L168 Benchmark]: TraceAbstraction took 1141.12 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 229.0 MB in the beginning and 380.4 MB in the end (delta: -151.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-01-25 05:19:22,221 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 305.1 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.83 ms. Allocated memory is still 305.1 MB. Free memory was 262.1 MB in the beginning and 252.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 294.46 ms. Allocated memory is still 305.1 MB. Free memory was 250.0 MB in the beginning and 230.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1141.12 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 229.0 MB in the beginning and 380.4 MB in the end (delta: -151.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] EXPR, FCALL __builtin_alloca (length*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={5:0}, length=1] [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 VAL [__builtin_alloca (length*sizeof(int))={5:0}, arr={5:0}, i=0, length=1] [L546] COND TRUE i