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_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 19:43:04,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 19:43:04,261 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 19:43:04,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 19:43:04,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 19:43:04,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 19:43:04,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 19:43:04,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 19:43:04,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 19:43:04,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 19:43:04,280 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 19:43:04,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 19:43:04,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 19:43:04,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 19:43:04,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 19:43:04,286 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 19:43:04,288 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 19:43:04,290 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 19:43:04,291 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 19:43:04,292 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 19:43:04,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 19:43:04,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 19:43:04,295 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 19:43:04,296 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 19:43:04,297 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 19:43:04,298 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 19:43:04,299 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 19:43:04,299 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 19:43:04,300 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 19:43:04,300 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 19:43:04,300 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 19:43:04,301 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_mostprecise.epf [2018-01-24 19:43:04,311 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 19:43:04,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 19:43:04,312 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 19:43:04,312 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 19:43:04,312 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 19:43:04,312 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 19:43:04,313 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 19:43:04,313 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 19:43:04,313 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 19:43:04,314 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 19:43:04,314 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 19:43:04,314 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 19:43:04,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 19:43:04,314 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 19:43:04,315 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 19:43:04,316 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 19:43:04,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 19:43:04,316 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 19:43:04,316 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 19:43:04,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 19:43:04,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 19:43:04,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 19:43:04,317 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 19:43:04,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 19:43:04,317 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 19:43:04,318 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 19:43:04,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 19:43:04,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 19:43:04,318 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 19:43:04,318 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 19:43:04,319 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 19:43:04,319 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 19:43:04,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 19:43:04,362 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 19:43:04,366 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 19:43:04,367 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 19:43:04,367 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 19:43:04,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-24 19:43:04,530 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 19:43:04,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 19:43:04,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 19:43:04,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 19:43:04,545 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 19:43:04,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1365a45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04, skipping insertion in model container [2018-01-24 19:43:04,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,570 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:43:04,609 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:43:04,732 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:43:04,748 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:43:04,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04 WrapperNode [2018-01-24 19:43:04,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 19:43:04,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 19:43:04,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 19:43:04,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 19:43:04,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (1/1) ... [2018-01-24 19:43:04,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 19:43:04,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 19:43:04,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 19:43:04,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 19:43:04,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (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 [2018-01-24 19:43:04,840 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 19:43:04,840 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 19:43:04,840 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 19:43:04,841 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 19:43:04,842 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 19:43:04,842 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 19:43:04,842 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 19:43:05,124 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 19:43:05,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:43:05 BoogieIcfgContainer [2018-01-24 19:43:05,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 19:43:05,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 19:43:05,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 19:43:05,127 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 19:43:05,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 07:43:04" (1/3) ... [2018-01-24 19:43:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0b33fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 07:43:05, skipping insertion in model container [2018-01-24 19:43:05,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:43:04" (2/3) ... [2018-01-24 19:43:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0b33fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 07:43:05, skipping insertion in model container [2018-01-24 19:43:05,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:43:05" (3/3) ... [2018-01-24 19:43:05,131 INFO L105 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-24 19:43:05,138 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 19:43:05,145 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-01-24 19:43:05,184 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 19:43:05,184 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 19:43:05,184 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 19:43:05,184 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 19:43:05,184 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 19:43:05,184 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 19:43:05,184 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 19:43:05,185 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 19:43:05,185 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 19:43:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-24 19:43:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 19:43:05,209 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:43:05,210 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:43:05,210 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]=== [2018-01-24 19:43:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash -506470517, now seen corresponding path program 1 times [2018-01-24 19:43:05,216 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:43:05,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,257 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:43:05,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,258 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:43:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 19:43:05,311 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 19:43:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 19:43:05,347 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 19:43:05,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 19:43:05,347 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 19:43:05,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 19:43:05,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 19:43:05,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 19:43:05,361 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-01-24 19:43:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 19:43:05,455 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2018-01-24 19:43:05,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 19:43:05,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-24 19:43:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 19:43:05,466 INFO L225 Difference]: With dead ends: 101 [2018-01-24 19:43:05,466 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 19:43:05,469 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 [2018-01-24 19:43:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 19:43:05,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-24 19:43:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 19:43:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-24 19:43:05,500 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 12 [2018-01-24 19:43:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 19:43:05,500 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-24 19:43:05,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 19:43:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-24 19:43:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 19:43:05,501 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:43:05,501 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:43:05,501 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]=== [2018-01-24 19:43:05,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258408, now seen corresponding path program 1 times [2018-01-24 19:43:05,501 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:43:05,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,502 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:43:05,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,502 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:43:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 19:43:05,520 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 19:43:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 19:43:05,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 19:43:05,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 19:43:05,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 19:43:05,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 19:43:05,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 19:43:05,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 19:43:05,583 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2018-01-24 19:43:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 19:43:05,717 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-01-24 19:43:05,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 19:43:05,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 19:43:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 19:43:05,719 INFO L225 Difference]: With dead ends: 60 [2018-01-24 19:43:05,719 INFO L226 Difference]: Without dead ends: 56 [2018-01-24 19:43:05,720 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 [2018-01-24 19:43:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-24 19:43:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-24 19:43:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 19:43:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-01-24 19:43:05,728 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2018-01-24 19:43:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 19:43:05,728 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-01-24 19:43:05,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 19:43:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-01-24 19:43:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 19:43:05,729 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:43:05,729 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:43:05,729 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]=== [2018-01-24 19:43:05,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258409, now seen corresponding path program 1 times [2018-01-24 19:43:05,730 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:43:05,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,731 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:43:05,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,731 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:43:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 19:43:05,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 19:43:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 19:43:05,795 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 19:43:05,795 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 19:43:05,796 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 19:43:05,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 19:43:05,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 19:43:05,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 19:43:05,796 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 4 states. [2018-01-24 19:43:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 19:43:05,859 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-24 19:43:05,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 19:43:05,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 19:43:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 19:43:05,860 INFO L225 Difference]: With dead ends: 102 [2018-01-24 19:43:05,861 INFO L226 Difference]: Without dead ends: 68 [2018-01-24 19:43:05,861 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 [2018-01-24 19:43:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-24 19:43:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2018-01-24 19:43:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-24 19:43:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-01-24 19:43:05,867 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2018-01-24 19:43:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 19:43:05,867 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-01-24 19:43:05,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 19:43:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-01-24 19:43:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 19:43:05,868 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:43:05,868 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:43:05,868 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]=== [2018-01-24 19:43:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258450, now seen corresponding path program 1 times [2018-01-24 19:43:05,868 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:43:05,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:43:05,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:05,869 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:43:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 19:43:05,881 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 19:43:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 19:43:05,999 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 19:43:05,999 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 19:43:05,999 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 19:43:05,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 19:43:06,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 19:43:06,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-24 19:43:06,000 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2018-01-24 19:43:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 19:43:06,163 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-24 19:43:06,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 19:43:06,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-01-24 19:43:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 19:43:06,165 INFO L225 Difference]: With dead ends: 68 [2018-01-24 19:43:06,165 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 19:43:06,165 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-24 19:43:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 19:43:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-01-24 19:43:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 19:43:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-24 19:43:06,173 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 13 [2018-01-24 19:43:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 19:43:06,174 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-24 19:43:06,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 19:43:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-24 19:43:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 19:43:06,175 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:43:06,175 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:43:06,175 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]=== [2018-01-24 19:43:06,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1619006049, now seen corresponding path program 1 times [2018-01-24 19:43:06,175 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:43:06,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:06,176 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:43:06,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:43:06,177 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:43:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 19:43:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 19:43:06,234 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 19:43:06,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 07:43:06 BoogieIcfgContainer [2018-01-24 19:43:06,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 19:43:06,260 INFO L168 Benchmark]: Toolchain (without parser) took 1729.95 ms. Allocated memory was 299.4 MB in the beginning and 455.1 MB in the end (delta: 155.7 MB). Free memory was 257.7 MB in the beginning and 369.2 MB in the end (delta: -111.5 MB). Peak memory consumption was 44.2 MB. Max. memory is 5.3 GB. [2018-01-24 19:43:06,262 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 299.4 MB. Free memory is still 263.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 19:43:06,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.59 ms. Allocated memory is still 299.4 MB. Free memory was 256.7 MB in the beginning and 246.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 19:43:06,263 INFO L168 Benchmark]: Boogie Preprocessor took 32.80 ms. Allocated memory is still 299.4 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 19:43:06,263 INFO L168 Benchmark]: RCFGBuilder took 336.70 ms. Allocated memory is still 299.4 MB. Free memory was 244.5 MB in the beginning and 224.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. [2018-01-24 19:43:06,263 INFO L168 Benchmark]: TraceAbstraction took 1134.23 ms. Allocated memory was 299.4 MB in the beginning and 455.1 MB in the end (delta: 155.7 MB). Free memory was 224.9 MB in the beginning and 369.2 MB in the end (delta: -144.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 5.3 GB. [2018-01-24 19:43:06,265 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 299.4 MB. Free memory is still 263.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.59 ms. Allocated memory is still 299.4 MB. Free memory was 256.7 MB in the beginning and 246.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.80 ms. Allocated memory is still 299.4 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 336.70 ms. Allocated memory is still 299.4 MB. Free memory was 244.5 MB in the beginning and 224.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1134.23 ms. Allocated memory was 299.4 MB in the beginning and 455.1 MB in the end (delta: 155.7 MB). Free memory was 224.9 MB in the beginning and 369.2 MB in the end (delta: -144.3 MB). Peak memory consumption was 11.4 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