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_imprecise.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 16:39:55,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:39:55,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:39:55,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:39:55,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:39:55,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:39:55,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:39:55,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:39:55,761 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:39:55,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:39:55,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:39:55,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:39:55,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:39:55,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:39:55,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:39:55,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:39:55,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:39:55,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:39:55,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:39:55,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:39:55,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:39:55,778 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:39:55,778 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:39:55,779 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:39:55,780 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:39:55,781 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:39:55,782 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:39:55,782 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:39:55,782 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:39:55,783 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:39:55,783 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:39:55,784 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_imprecise.epf [2018-01-24 16:39:55,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:39:55,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:39:55,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:39:55,795 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:39:55,795 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:39:55,795 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:39:55,795 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:39:55,795 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:39:55,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:39:55,796 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:39:55,797 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:39:55,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:39:55,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:39:55,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:39:55,797 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:39:55,798 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:39:55,798 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:39:55,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:39:55,798 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:39:55,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:39:55,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:39:55,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:39:55,799 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:39:55,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:39:55,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:39:55,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:39:55,800 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:39:55,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:39:55,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:39:55,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 16:39:55,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:39:55,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:39:55,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:39:55,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 16:39:55,802 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:39:55,802 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:39:55,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:39:55,851 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:39:55,855 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:39:55,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:39:55,857 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:39:55,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-24 16:39:56,027 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:39:56,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:39:56,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:39:56,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:39:56,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:39:56,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b029a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56, skipping insertion in model container [2018-01-24 16:39:56,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,056 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:39:56,093 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:39:56,208 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:39:56,223 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:39:56,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56 WrapperNode [2018-01-24 16:39:56,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:39:56,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:39:56,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:39:56,232 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:39:56,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (1/1) ... [2018-01-24 16:39:56,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:39:56,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:39:56,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:39:56,266 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:39:56,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (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 16:39:56,316 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:39:56,317 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:39:56,317 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:39:56,317 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:39:56,318 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:39:56,318 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:39:56,318 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:39:56,614 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:39:56,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:39:56 BoogieIcfgContainer [2018-01-24 16:39:56,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:39:56,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 16:39:56,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 16:39:56,618 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 16:39:56,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:39:56" (1/3) ... [2018-01-24 16:39:56,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42562bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:39:56, skipping insertion in model container [2018-01-24 16:39:56,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:39:56" (2/3) ... [2018-01-24 16:39:56,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42562bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:39:56, skipping insertion in model container [2018-01-24 16:39:56,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:39:56" (3/3) ... [2018-01-24 16:39:56,621 INFO L105 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-24 16:39:56,628 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 16:39:56,636 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-01-24 16:39:56,674 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 16:39:56,674 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 16:39:56,674 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 16:39:56,674 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 16:39:56,674 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 16:39:56,675 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 16:39:56,675 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 16:39:56,675 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 16:39:56,675 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 16:39:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-24 16:39:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 16:39:56,700 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:39:56,701 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:39:56,702 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 16:39:56,707 INFO L82 PathProgramCache]: Analyzing trace with hash -506470517, now seen corresponding path program 1 times [2018-01-24 16:39:56,710 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:39:56,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:56,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:39:56,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:56,754 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:39:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:39:56,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:39:56,849 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 16:39:56,850 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:39:56,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 16:39:56,851 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:39:56,853 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 16:39:56,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 16:39:56,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 16:39:56,866 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-01-24 16:39:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:39:56,974 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2018-01-24 16:39:56,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 16:39:56,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-24 16:39:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:39:56,986 INFO L225 Difference]: With dead ends: 101 [2018-01-24 16:39:56,986 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 16:39:56,991 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 16:39:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 16:39:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-24 16:39:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 16:39:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-24 16:39:57,034 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 12 [2018-01-24 16:39:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:39:57,034 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-24 16:39:57,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 16:39:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-24 16:39:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 16:39:57,035 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:39:57,036 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:39:57,036 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 16:39:57,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258408, now seen corresponding path program 1 times [2018-01-24 16:39:57,036 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:39:57,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:39:57,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,038 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:39:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:39:57,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:39:57,116 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 16:39:57,116 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:39:57,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:39:57,117 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:39:57,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:39:57,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:39:57,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:39:57,119 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2018-01-24 16:39:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:39:57,266 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-01-24 16:39:57,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:39:57,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 16:39:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:39:57,268 INFO L225 Difference]: With dead ends: 60 [2018-01-24 16:39:57,268 INFO L226 Difference]: Without dead ends: 56 [2018-01-24 16:39:57,269 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 16:39:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-24 16:39:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-24 16:39:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 16:39:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-01-24 16:39:57,277 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2018-01-24 16:39:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:39:57,277 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-01-24 16:39:57,277 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:39:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-01-24 16:39:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 16:39:57,278 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:39:57,278 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:39:57,278 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 16:39:57,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258409, now seen corresponding path program 1 times [2018-01-24 16:39:57,279 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:39:57,280 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,280 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:39:57,280 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,280 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:39:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:39:57,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:39:57,371 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 16:39:57,371 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:39:57,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:39:57,372 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:39:57,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:39:57,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:39:57,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:39:57,373 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 4 states. [2018-01-24 16:39:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:39:57,447 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-24 16:39:57,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:39:57,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 16:39:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:39:57,449 INFO L225 Difference]: With dead ends: 102 [2018-01-24 16:39:57,449 INFO L226 Difference]: Without dead ends: 68 [2018-01-24 16:39:57,449 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 16:39:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-24 16:39:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2018-01-24 16:39:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-24 16:39:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-01-24 16:39:57,455 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2018-01-24 16:39:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:39:57,455 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-01-24 16:39:57,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:39:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-01-24 16:39:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 16:39:57,456 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:39:57,456 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:39:57,456 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 16:39:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258450, now seen corresponding path program 1 times [2018-01-24 16:39:57,456 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:39:57,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:39:57,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,457 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:39:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:39:57,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:39:57,637 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 16:39:57,637 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:39:57,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 16:39:57,638 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:39:57,638 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 16:39:57,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 16:39:57,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-24 16:39:57,638 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2018-01-24 16:39:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:39:57,775 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-24 16:39:57,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:39:57,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-01-24 16:39:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:39:57,777 INFO L225 Difference]: With dead ends: 68 [2018-01-24 16:39:57,777 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 16:39:57,777 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 [2018-01-24 16:39:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 16:39:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-01-24 16:39:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 16:39:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-24 16:39:57,785 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 13 [2018-01-24 16:39:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:39:57,785 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-24 16:39:57,785 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 16:39:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-24 16:39:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 16:39:57,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:39:57,787 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 16:39:57,787 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 16:39:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1619006049, now seen corresponding path program 1 times [2018-01-24 16:39:57,787 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:39:57,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:39:57,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:39:57,788 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:39:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 16:39:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 16:39:57,844 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 16:39:57,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 04:39:57 BoogieIcfgContainer [2018-01-24 16:39:57,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 16:39:57,868 INFO L168 Benchmark]: Toolchain (without parser) took 1841.05 ms. Allocated memory was 309.3 MB in the beginning and 477.1 MB in the end (delta: 167.8 MB). Free memory was 268.4 MB in the beginning and 391.1 MB in the end (delta: -122.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:39:57,869 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 309.3 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:39:57,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.70 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:39:57,870 INFO L168 Benchmark]: Boogie Preprocessor took 33.72 ms. Allocated memory is still 309.3 MB. Free memory was 258.4 MB in the beginning and 256.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:39:57,870 INFO L168 Benchmark]: RCFGBuilder took 349.27 ms. Allocated memory is still 309.3 MB. Free memory was 256.4 MB in the beginning and 235.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:39:57,871 INFO L168 Benchmark]: TraceAbstraction took 1252.38 ms. Allocated memory was 309.3 MB in the beginning and 477.1 MB in the end (delta: 167.8 MB). Free memory was 235.8 MB in the beginning and 391.1 MB in the end (delta: -155.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 5.3 GB. [2018-01-24 16:39:57,872 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 309.3 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 197.70 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.72 ms. Allocated memory is still 309.3 MB. Free memory was 258.4 MB in the beginning and 256.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 349.27 ms. Allocated memory is still 309.3 MB. Free memory was 256.4 MB in the beginning and 235.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1252.38 ms. Allocated memory was 309.3 MB in the beginning and 477.1 MB in the end (delta: 167.8 MB). Free memory was 235.8 MB in the beginning and 391.1 MB in the end (delta: -155.3 MB). Peak memory consumption was 12.5 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