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.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:50:00,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:50:00,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:50:00,277 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:50:00,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:50:00,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:50:00,279 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:50:00,281 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:50:00,283 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:50:00,284 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:50:00,284 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:50:00,285 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:50:00,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:50:00,287 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:50:00,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:50:00,290 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:50:00,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:50:00,294 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:50:00,295 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:50:00,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:50:00,299 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 15:50:00,299 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 15:50:00,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 15:50:00,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 15:50:00,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 15:50:00,302 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 15:50:00,302 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 15:50:00,303 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 15:50:00,303 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 15:50:00,303 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:50:00,304 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:50:00,304 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.epf [2018-01-24 15:50:00,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:50:00,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:50:00,315 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:50:00,315 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:50:00,316 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:50:00,316 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:50:00,316 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:50:00,317 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:50:00,317 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:50:00,317 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:50:00,317 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:50:00,317 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:50:00,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:50:00,318 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:50:00,318 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:50:00,318 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:50:00,318 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:50:00,318 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:50:00,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:50:00,319 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:50:00,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:50:00,319 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:50:00,319 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:50:00,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:50:00,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:50:00,320 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:50:00,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:50:00,320 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:50:00,321 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:50:00,321 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:50:00,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:50:00,321 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:50:00,321 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:50:00,322 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:50:00,322 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:50:00,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:50:00,368 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:50:00,372 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:50:00,374 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:50:00,374 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:50:00,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-24 15:50:00,494 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:50:00,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:50:00,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:50:00,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:50:00,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:50:00,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e9bcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00, skipping insertion in model container [2018-01-24 15:50:00,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,557 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:50:00,576 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:50:00,688 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:50:00,705 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:50:00,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00 WrapperNode [2018-01-24 15:50:00,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:50:00,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:50:00,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:50:00,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:50:00,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (1/1) ... [2018-01-24 15:50:00,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:50:00,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:50:00,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:50:00,741 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:50:00,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (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 15:50:00,787 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:50:00,787 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:50:00,787 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-01-24 15:50:00,787 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 15:50:00,787 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:50:00,787 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 15:50:00,787 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 15:50:00,787 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:50:00,788 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:50:01,004 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:50:01,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:50:01 BoogieIcfgContainer [2018-01-24 15:50:01,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:50:01,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:50:01,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:50:01,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:50:01,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:50:00" (1/3) ... [2018-01-24 15:50:01,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39831a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:50:01, skipping insertion in model container [2018-01-24 15:50:01,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:50:00" (2/3) ... [2018-01-24 15:50:01,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39831a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:50:01, skipping insertion in model container [2018-01-24 15:50:01,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:50:01" (3/3) ... [2018-01-24 15:50:01,012 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-24 15:50:01,019 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:50:01,024 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-24 15:50:01,069 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:50:01,069 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:50:01,069 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:50:01,069 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:50:01,069 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:50:01,069 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:50:01,070 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:50:01,070 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:50:01,071 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:50:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-01-24 15:50:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 15:50:01,096 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:50:01,097 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:50:01,097 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 15:50:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-01-24 15:50:01,103 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:50:01,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:50:01,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,143 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:50:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:50:01,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:50:01,209 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 15:50:01,212 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:50:01,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 15:50:01,212 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:50:01,215 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 15:50:01,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 15:50:01,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 15:50:01,230 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-01-24 15:50:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:50:01,255 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2018-01-24 15:50:01,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 15:50:01,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-24 15:50:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:50:01,268 INFO L225 Difference]: With dead ends: 128 [2018-01-24 15:50:01,268 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 15:50:01,271 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 15:50:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 15:50:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-01-24 15:50:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-24 15:50:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-24 15:50:01,305 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-01-24 15:50:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:50:01,306 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-24 15:50:01,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 15:50:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-24 15:50:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 15:50:01,307 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:50:01,307 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:50:01,307 INFO L371 AbstractCegarLoop]: === Iteration 2 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 15:50:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-01-24 15:50:01,308 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:50:01,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,310 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:50:01,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,310 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:50:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:50:01,330 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:50:01,452 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 15:50:01,452 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:50:01,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:50:01,452 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:50:01,454 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 15:50:01,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 15:50:01,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:50:01,456 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-01-24 15:50:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:50:01,519 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2018-01-24 15:50:01,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 15:50:01,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-24 15:50:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:50:01,524 INFO L225 Difference]: With dead ends: 86 [2018-01-24 15:50:01,524 INFO L226 Difference]: Without dead ends: 71 [2018-01-24 15:50:01,525 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 15:50:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-24 15:50:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-01-24 15:50:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-24 15:50:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-24 15:50:01,540 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-01-24 15:50:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:50:01,540 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-24 15:50:01,540 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 15:50:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-24 15:50:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 15:50:01,541 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:50:01,541 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:50:01,541 INFO L371 AbstractCegarLoop]: === Iteration 3 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 15:50:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-01-24 15:50:01,542 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:50:01,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,543 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:50:01,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,543 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:50:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:50:01,566 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:50:01,673 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 15:50:01,673 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:50:01,673 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 15:50:01,673 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:50:01,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 15:50:01,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 15:50:01,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:50:01,675 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-01-24 15:50:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:50:01,778 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2018-01-24 15:50:01,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:50:01,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-01-24 15:50:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:50:01,780 INFO L225 Difference]: With dead ends: 139 [2018-01-24 15:50:01,780 INFO L226 Difference]: Without dead ends: 85 [2018-01-24 15:50:01,781 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-24 15:50:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-24 15:50:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-01-24 15:50:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-24 15:50:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-01-24 15:50:01,792 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-01-24 15:50:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:50:01,792 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-01-24 15:50:01,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 15:50:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-01-24 15:50:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 15:50:01,793 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:50:01,793 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:50:01,793 INFO L371 AbstractCegarLoop]: === Iteration 4 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 15:50:01,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times [2018-01-24 15:50:01,794 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:50:01,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:50:01,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,795 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:50:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:50:01,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:50:01,856 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 15:50:01,856 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:50:01,856 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:50:01,856 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:50:01,857 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:50:01,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:50:01,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:50:01,857 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 5 states. [2018-01-24 15:50:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:50:01,944 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2018-01-24 15:50:01,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:50:01,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-24 15:50:01,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:50:01,947 INFO L225 Difference]: With dead ends: 79 [2018-01-24 15:50:01,948 INFO L226 Difference]: Without dead ends: 77 [2018-01-24 15:50:01,950 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:50:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-24 15:50:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-24 15:50:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-24 15:50:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-01-24 15:50:01,965 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2018-01-24 15:50:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:50:01,965 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-01-24 15:50:01,965 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:50:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-01-24 15:50:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 15:50:01,966 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:50:01,966 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:50:01,966 INFO L371 AbstractCegarLoop]: === Iteration 5 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-24 15:50:01,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184184, now seen corresponding path program 1 times [2018-01-24 15:50:01,966 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:50:01,967 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,967 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:50:01,967 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:50:01,967 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:50:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:50:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:50:02,013 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 15:50:02,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:50:02 BoogieIcfgContainer [2018-01-24 15:50:02,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:50:02,038 INFO L168 Benchmark]: Toolchain (without parser) took 1543.45 ms. Allocated memory was 304.6 MB in the beginning and 460.3 MB in the end (delta: 155.7 MB). Free memory was 265.7 MB in the beginning and 386.0 MB in the end (delta: -120.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 5.3 GB. [2018-01-24 15:50:02,039 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:50:02,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.21 ms. Allocated memory is still 304.6 MB. Free memory was 265.7 MB in the beginning and 256.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:50:02,040 INFO L168 Benchmark]: Boogie Preprocessor took 29.31 ms. Allocated memory is still 304.6 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 15:50:02,040 INFO L168 Benchmark]: RCFGBuilder took 264.67 ms. Allocated memory is still 304.6 MB. Free memory was 254.6 MB in the beginning and 234.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. [2018-01-24 15:50:02,041 INFO L168 Benchmark]: TraceAbstraction took 1031.27 ms. Allocated memory was 304.6 MB in the beginning and 460.3 MB in the end (delta: 155.7 MB). Free memory was 234.9 MB in the beginning and 386.0 MB in the end (delta: -151.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 5.3 GB. [2018-01-24 15:50:02,042 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.21 ms. Allocated memory is still 304.6 MB. Free memory was 265.7 MB in the beginning and 256.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.31 ms. Allocated memory is still 304.6 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 264.67 ms. Allocated memory is still 304.6 MB. Free memory was 254.6 MB in the beginning and 234.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1031.27 ms. Allocated memory was 304.6 MB in the beginning and 460.3 MB in the end (delta: 155.7 MB). Free memory was 234.9 MB in the beginning and 386.0 MB in the end (delta: -151.1 MB). Peak memory consumption was 4.6 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: [L32] int i, b[100]; VAL [b={403:0}] [L33] i = 0 VAL [b={403:0}, i=0] [L33] COND TRUE i < 100 VAL [b={403:0}, i=0] [L34] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={403:0}] [L21] FCALL int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={401:0}, b={403:0}, b={403:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={401:0}, b={403:0}, b={403:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={401:0}] [L12] int res = 0, i; [L13] i = 0 VAL [\old(size)=1, b={401:0}, b={401:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={401:0}, b={401:0}, i=0, res=0, size=1] [L14] FCALL b[i] VAL [\old(size)=1, b={401:0}, b={401:0}, i=0, res=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 68 locations, 11 error locations. UNSAFE Result, 0.9s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 239 SDtfs, 94 SDslu, 306 SDs, 0 SdLazy, 125 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=3, 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, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 2045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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/ArraysOfVariableLength2_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-50-02-050.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-50-02-050.csv Received shutdown request...