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/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:13:58,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:13:58,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:13:58,183 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:13:58,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:13:58,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:13:58,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:13:58,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:13:58,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:13:58,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:13:58,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:13:58,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:13:58,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:13:58,192 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:13:58,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:13:58,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:13:58,198 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:13:58,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:13:58,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:13:58,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:13:58,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:13:58,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:13:58,206 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:13:58,207 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:13:58,208 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:13:58,209 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:13:58,209 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:13:58,210 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:13:58,210 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:13:58,210 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:13:58,211 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:13:58,211 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 17:13:58,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:13:58,221 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:13:58,222 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:13:58,222 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:13:58,222 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:13:58,223 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:13:58,223 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:13:58,223 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:13:58,224 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:13:58,224 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:13:58,224 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:13:58,224 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:13:58,224 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:13:58,225 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:13:58,225 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:13:58,225 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:13:58,225 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:13:58,225 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:13:58,226 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:13:58,226 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:13:58,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:13:58,226 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:13:58,226 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:13:58,227 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:13:58,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:13:58,227 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:13:58,227 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:13:58,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:13:58,228 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:13:58,229 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:13:58,230 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:13:58,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:13:58,277 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:13:58,281 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:13:58,283 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:13:58,283 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:13:58,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-read.c [2018-01-24 17:13:58,393 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:13:58,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:13:58,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:13:58,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:13:58,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:13:58,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400f498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58, skipping insertion in model container [2018-01-24 17:13:58,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,429 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:13:58,449 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:13:58,567 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:13:58,583 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:13:58,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58 WrapperNode [2018-01-24 17:13:58,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:13:58,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:13:58,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:13:58,590 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:13:58,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (1/1) ... [2018-01-24 17:13:58,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:13:58,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:13:58,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:13:58,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:13:58,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (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 17:13:58,662 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:13:58,662 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:13:58,663 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 17:13:58,663 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:13:58,663 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 17:13:58,663 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 17:13:58,663 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:13:58,664 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:13:58,864 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:13:58,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:13:58 BoogieIcfgContainer [2018-01-24 17:13:58,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:13:58,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:13:58,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:13:58,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:13:58,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:13:58" (1/3) ... [2018-01-24 17:13:58,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad67f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:13:58, skipping insertion in model container [2018-01-24 17:13:58,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:13:58" (2/3) ... [2018-01-24 17:13:58,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad67f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:13:58, skipping insertion in model container [2018-01-24 17:13:58,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:13:58" (3/3) ... [2018-01-24 17:13:58,871 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_false-valid-deref-read.c [2018-01-24 17:13:58,877 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:13:58,882 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-01-24 17:13:58,920 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:13:58,920 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:13:58,920 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:13:58,920 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:13:58,920 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:13:58,921 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:13:58,921 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:13:58,921 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:13:58,922 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:13:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-01-24 17:13:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 17:13:58,949 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:13:58,951 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:13:58,951 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 17:13:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash -794867092, now seen corresponding path program 1 times [2018-01-24 17:13:58,959 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:13:59,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,006 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:13:59,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,006 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:13:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:13:59,050 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:13:59,082 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 17:13:59,084 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:13:59,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:13:59,084 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:13:59,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 17:13:59,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 17:13:59,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 17:13:59,099 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-01-24 17:13:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:13:59,124 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2018-01-24 17:13:59,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 17:13:59,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-24 17:13:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:13:59,133 INFO L225 Difference]: With dead ends: 88 [2018-01-24 17:13:59,133 INFO L226 Difference]: Without dead ends: 45 [2018-01-24 17:13:59,137 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 17:13:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-01-24 17:13:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-01-24 17:13:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-24 17:13:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-01-24 17:13:59,170 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 13 [2018-01-24 17:13:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:13:59,171 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-01-24 17:13:59,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 17:13:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-01-24 17:13:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 17:13:59,172 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:13:59,172 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:13:59,172 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 17:13:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash 686433396, now seen corresponding path program 1 times [2018-01-24 17:13:59,172 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:13:59,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,173 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:13:59,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,174 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:13:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:13:59,190 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:13:59,232 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 17:13:59,233 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:13:59,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:13:59,233 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:13:59,235 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:13:59,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:13:59,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:13:59,236 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2018-01-24 17:13:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:13:59,371 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-01-24 17:13:59,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:13:59,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-24 17:13:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:13:59,374 INFO L225 Difference]: With dead ends: 66 [2018-01-24 17:13:59,374 INFO L226 Difference]: Without dead ends: 51 [2018-01-24 17:13:59,375 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:13:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-24 17:13:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2018-01-24 17:13:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-24 17:13:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-01-24 17:13:59,384 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 14 [2018-01-24 17:13:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:13:59,384 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-01-24 17:13:59,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:13:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-01-24 17:13:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 17:13:59,385 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:13:59,385 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:13:59,385 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 17:13:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash -108375574, now seen corresponding path program 1 times [2018-01-24 17:13:59,385 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:13:59,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,386 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:13:59,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:13:59,386 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:13:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:13:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:13:59,437 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 17:13:59,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 05:13:59 BoogieIcfgContainer [2018-01-24 17:13:59,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 17:13:59,454 INFO L168 Benchmark]: Toolchain (without parser) took 1060.61 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 263.0 MB in the beginning and 428.0 MB in the end (delta: -165.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:13:59,455 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 304.1 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:13:59,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.00 ms. Allocated memory is still 304.1 MB. Free memory was 263.0 MB in the beginning and 253.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. [2018-01-24 17:13:59,456 INFO L168 Benchmark]: Boogie Preprocessor took 27.65 ms. Allocated memory is still 304.1 MB. Free memory was 253.8 MB in the beginning and 252.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 17:13:59,456 INFO L168 Benchmark]: RCFGBuilder took 247.77 ms. Allocated memory is still 304.1 MB. Free memory was 252.8 MB in the beginning and 235.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-01-24 17:13:59,457 INFO L168 Benchmark]: TraceAbstraction took 587.50 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 235.5 MB in the beginning and 428.0 MB in the end (delta: -192.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:13:59,459 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 304.1 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 189.00 ms. Allocated memory is still 304.1 MB. Free memory was 263.0 MB in the beginning and 253.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.65 ms. Allocated memory is still 304.1 MB. Free memory was 253.8 MB in the beginning and 252.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 247.77 ms. Allocated memory is still 304.1 MB. Free memory was 252.8 MB in the beginning and 235.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 587.50 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 235.5 MB in the beginning and 428.0 MB in the end (delta: -192.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; VAL [b={402:0}] [L22] i = 0 VAL [b={402:0}, i=0] [L22] COND TRUE i < 100 VAL [b={402:0}, i=0] [L23] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={402:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={402:0}, b={402:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={402:0}, b={402:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={402:0}, b={402:0}, i=0, n=0, size=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 8 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 17 SDslu, 25 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-13-59-465.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_17-13-59-465.csv Received shutdown request...