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/mempurity-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:25:42,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:25:42,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:25:42,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:25:42,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:25:42,698 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:25:42,699 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:25:42,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:25:42,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:25:42,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:25:42,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:25:42,704 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:25:42,705 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:25:42,706 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:25:42,707 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:25:42,710 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:25:42,712 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:25:42,713 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:25:42,715 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:25:42,716 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:25:42,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 23:25:42,723 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:25:42,733 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:25:42,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:25:42,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:25:42,734 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:25:42,734 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:25:42,734 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:25:42,735 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:25:42,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:25:42,735 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:25:42,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:25:42,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:25:42,737 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:25:42,737 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:25:42,737 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:25:42,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:25:42,738 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:25:42,738 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:25:42,738 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:25:42,738 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:25:42,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:25:42,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:25:42,739 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:25:42,739 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:25:42,739 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:25:42,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:25:42,739 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:25:42,740 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:25:42,740 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:25:42,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:25:42,740 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:25:42,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:25:42,741 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:25:42,741 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:25:42,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:25:42,786 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:25:42,790 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:25:42,792 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:25:42,792 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:25:42,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:25:42,979 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:25:42,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:25:42,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:25:42,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:25:42,992 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:25:42,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:25:42" (1/1) ... [2018-01-20 23:25:42,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683c273b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:42, skipping insertion in model container [2018-01-20 23:25:42,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:25:42" (1/1) ... [2018-01-20 23:25:43,014 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:25:43,054 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:25:43,158 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:25:43,174 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:25:43,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43 WrapperNode [2018-01-20 23:25:43,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:25:43,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:25:43,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:25:43,182 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:25:43,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (1/1) ... [2018-01-20 23:25:43,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:25:43,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:25:43,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:25:43,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:25:43,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (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 [2018-01-20 23:25:43,256 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:25:43,256 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:25:43,256 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlcpy [2018-01-20 23:25:43,256 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlcpy [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:25:43,257 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:25:43,445 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:25:43,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:25:43 BoogieIcfgContainer [2018-01-20 23:25:43,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:25:43,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:25:43,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:25:43,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:25:43,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:25:42" (1/3) ... [2018-01-20 23:25:43,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab71271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:25:43, skipping insertion in model container [2018-01-20 23:25:43,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:43" (2/3) ... [2018-01-20 23:25:43,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab71271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:25:43, skipping insertion in model container [2018-01-20 23:25:43,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:25:43" (3/3) ... [2018-01-20 23:25:43,450 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:25:43,457 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:25:43,462 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:25:43,501 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:43,501 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:43,501 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:43,501 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:43,501 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:43,501 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:43,501 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:43,501 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrlcpyErr0EnsuresViolation======== [2018-01-20 23:25:43,502 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-20 23:25:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-20 23:25:43,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:43,525 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] [2018-01-20 23:25:43,525 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlcpyErr0EnsuresViolation]=== [2018-01-20 23:25:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1347338006, now seen corresponding path program 1 times [2018-01-20 23:25:43,530 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:43,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,569 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:43,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,570 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:43,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:43,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:43,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-20 23:25:43,690 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:43,692 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:25:43,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:25:43,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:25:43,707 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-01-20 23:25:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:43,726 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2018-01-20 23:25:43,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:25:43,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-20 23:25:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:43,733 INFO L225 Difference]: With dead ends: 67 [2018-01-20 23:25:43,733 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:25:43,737 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:25:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:25:43,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:25:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:25:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:25:43,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-20 23:25:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:43,823 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:25:43,823 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:25:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:25:43,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:25:43,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-20 23:25:43,854 INFO L404 ceAbstractionStarter]: At program point cstrlcpyENTRY(lines 540 559) the Hoare annotation is: true [2018-01-20 23:25:43,854 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 551) no Hoare annotation was computed. [2018-01-20 23:25:43,854 INFO L401 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-20 23:25:43,854 INFO L401 ceAbstractionStarter]: For program point L547(lines 547 550) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L401 ceAbstractionStarter]: For program point cstrlcpyFINAL(lines 540 559) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L401 ceAbstractionStarter]: For program point L546'(lines 546 551) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L401 ceAbstractionStarter]: For program point cstrlcpyErr0EnsuresViolation(lines 540 559) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L401 ceAbstractionStarter]: For program point L555'(line 555) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L401 ceAbstractionStarter]: For program point L547'(lines 547 550) no Hoare annotation was computed. [2018-01-20 23:25:43,855 INFO L404 ceAbstractionStarter]: At program point L547'''(lines 547 550) the Hoare annotation is: true [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L555''(line 555) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L553(lines 553 554) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L552(lines 552 557) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L555(lines 555 556) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point cstrlcpyEXIT(lines 540 559) no Hoare annotation was computed. [2018-01-20 23:25:43,856 INFO L401 ceAbstractionStarter]: For program point L555''''(lines 555 556) no Hoare annotation was computed. [2018-01-20 23:25:43,857 INFO L401 ceAbstractionStarter]: For program point L548''(line 548) no Hoare annotation was computed. [2018-01-20 23:25:43,857 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,857 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,857 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 575) the Hoare annotation is: true [2018-01-20 23:25:43,857 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,857 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 575) the Hoare annotation is: true [2018-01-20 23:25:43,857 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 575) the Hoare annotation is: true [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 575) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point L571'(line 571) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point L563(lines 563 565) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point L569(line 569) no Hoare annotation was computed. [2018-01-20 23:25:43,858 INFO L401 ceAbstractionStarter]: For program point L570''(line 570) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L566'(lines 566 568) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 560 575) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L571(line 571) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L570(line 570) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L570'(line 570) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L570'''(line 570) no Hoare annotation was computed. [2018-01-20 23:25:43,859 INFO L401 ceAbstractionStarter]: For program point L573(line 573) no Hoare annotation was computed. [2018-01-20 23:25:43,860 INFO L404 ceAbstractionStarter]: At program point L572(line 572) the Hoare annotation is: true [2018-01-20 23:25:43,860 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 560 575) no Hoare annotation was computed. [2018-01-20 23:25:43,860 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 560 575) no Hoare annotation was computed. [2018-01-20 23:25:43,860 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 560 575) the Hoare annotation is: true [2018-01-20 23:25:43,860 INFO L401 ceAbstractionStarter]: For program point L563''(lines 563 565) no Hoare annotation was computed. [2018-01-20 23:25:43,860 INFO L401 ceAbstractionStarter]: For program point L569''(line 569) no Hoare annotation was computed. [2018-01-20 23:25:43,860 INFO L401 ceAbstractionStarter]: For program point L569'(line 569) no Hoare annotation was computed. [2018-01-20 23:25:43,864 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:43,864 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:43,864 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:43,864 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:43,864 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:43,864 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:43,864 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:43,865 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:25:43,865 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-20 23:25:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:25:43,867 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:43,867 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:25:43,867 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:25:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash 120061, now seen corresponding path program 1 times [2018-01-20 23:25:43,868 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:43,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:43,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,869 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:43,894 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:25:43,897 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:43,901 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:43,902 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:43,902 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:43,902 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:43,902 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:43,902 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:43,902 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:43,902 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:25:43,903 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-20 23:25:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 23:25:43,906 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:43,906 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:43,907 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash 621811580, now seen corresponding path program 1 times [2018-01-20 23:25:43,907 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:43,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,908 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:43,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:43,908 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:43,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:43,992 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:43,993 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:25:43,993 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:43,993 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:25:43,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:25:43,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:25:43,994 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-20 23:25:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:44,024 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-01-20 23:25:44,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:25:44,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-20 23:25:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:44,031 INFO L225 Difference]: With dead ends: 71 [2018-01-20 23:25:44,031 INFO L226 Difference]: Without dead ends: 46 [2018-01-20 23:25:44,031 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 [2018-01-20 23:25:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-20 23:25:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-01-20 23:25:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-20 23:25:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-01-20 23:25:44,043 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 29 [2018-01-20 23:25:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:44,043 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-01-20 23:25:44,043 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:25:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-01-20 23:25:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:25:44,044 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:44,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:44,045 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1767468765, now seen corresponding path program 1 times [2018-01-20 23:25:44,045 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:44,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,046 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:44,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,047 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:44,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:44,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:44,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-20 23:25:44,266 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:44,268 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 23:25:44,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 23:25:44,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:25:44,269 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2018-01-20 23:25:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:44,497 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-01-20 23:25:44,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 23:25:44,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-01-20 23:25:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:44,500 INFO L225 Difference]: With dead ends: 90 [2018-01-20 23:25:44,500 INFO L226 Difference]: Without dead ends: 81 [2018-01-20 23:25:44,502 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-01-20 23:25:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-20 23:25:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2018-01-20 23:25:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-20 23:25:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2018-01-20 23:25:44,517 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2018-01-20 23:25:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:44,517 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2018-01-20 23:25:44,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 23:25:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2018-01-20 23:25:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:25:44,520 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:44,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:44,520 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1626920155, now seen corresponding path program 1 times [2018-01-20 23:25:44,520 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:44,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,521 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:44,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,521 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:44,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:44,641 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:44,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 23:25:44,641 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:44,642 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:25:44,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:25:44,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 23:25:44,643 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 4 states. [2018-01-20 23:25:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:44,676 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2018-01-20 23:25:44,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 23:25:44,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-20 23:25:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:44,679 INFO L225 Difference]: With dead ends: 89 [2018-01-20 23:25:44,679 INFO L226 Difference]: Without dead ends: 74 [2018-01-20 23:25:44,680 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 [2018-01-20 23:25:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-20 23:25:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-01-20 23:25:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-20 23:25:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2018-01-20 23:25:44,693 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 32 [2018-01-20 23:25:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:44,693 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2018-01-20 23:25:44,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:25:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2018-01-20 23:25:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-20 23:25:44,695 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:44,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:44,695 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:44,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1494185038, now seen corresponding path program 1 times [2018-01-20 23:25:44,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:44,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:44,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,698 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:44,717 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:44,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:44,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 23:25:44,829 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:44,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:25:44,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:25:44,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:25:44,830 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 6 states. [2018-01-20 23:25:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:44,863 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-01-20 23:25:44,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 23:25:44,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-20 23:25:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:44,865 INFO L225 Difference]: With dead ends: 90 [2018-01-20 23:25:44,865 INFO L226 Difference]: Without dead ends: 67 [2018-01-20 23:25:44,866 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:25:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-20 23:25:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-20 23:25:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-20 23:25:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2018-01-20 23:25:44,873 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 34 [2018-01-20 23:25:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:44,873 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2018-01-20 23:25:44,873 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:25:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2018-01-20 23:25:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-20 23:25:44,875 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:44,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:44,876 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:44,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1459560073, now seen corresponding path program 1 times [2018-01-20 23:25:44,876 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:44,877 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,877 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:44,877 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,877 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:44,936 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:25:44,945 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:44,952 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:44,954 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:44,954 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:44,971 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:44,971 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:44,971 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:44,971 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:44,971 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:44,972 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:44,972 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:44,972 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:25:44,972 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-20 23:25:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 23:25:44,975 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:44,975 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, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:44,975 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash -276447620, now seen corresponding path program 1 times [2018-01-20 23:25:44,976 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:44,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,977 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:44,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:44,977 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:44,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:45,008 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:45,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:25:45,009 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:45,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:25:45,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:25:45,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:25:45,010 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-20 23:25:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:45,025 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-01-20 23:25:45,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:25:45,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-20 23:25:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:45,027 INFO L225 Difference]: With dead ends: 71 [2018-01-20 23:25:45,027 INFO L226 Difference]: Without dead ends: 44 [2018-01-20 23:25:45,027 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 [2018-01-20 23:25:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-20 23:25:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-01-20 23:25:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-20 23:25:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-01-20 23:25:45,032 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 27 [2018-01-20 23:25:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:45,032 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-01-20 23:25:45,032 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:25:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-01-20 23:25:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:25:45,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:45,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:45,034 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash -538151453, now seen corresponding path program 1 times [2018-01-20 23:25:45,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:45,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:45,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:45,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:45,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:45,050 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:45,197 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:45,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 23:25:45,198 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:45,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:25:45,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:25:45,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:25:45,199 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2018-01-20 23:25:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:45,364 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-01-20 23:25:45,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 23:25:45,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-20 23:25:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:45,366 INFO L225 Difference]: With dead ends: 41 [2018-01-20 23:25:45,366 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:25:45,367 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:25:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:25:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:25:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:25:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:25:45,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 23:25:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:45,368 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:25:45,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:25:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:25:45,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:25:45,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:25:45 BoogieIcfgContainer [2018-01-20 23:25:45,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:25:45,375 INFO L168 Benchmark]: Toolchain (without parser) took 2395.72 ms. Allocated memory was 307.2 MB in the beginning and 484.4 MB in the end (delta: 177.2 MB). Free memory was 265.5 MB in the beginning and 425.3 MB in the end (delta: -159.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:45,377 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:25:45,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.76 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:45,377 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 307.2 MB. Free memory was 254.6 MB in the beginning and 252.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:45,378 INFO L168 Benchmark]: RCFGBuilder took 235.46 ms. Allocated memory is still 307.2 MB. Free memory was 252.5 MB in the beginning and 234.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:45,378 INFO L168 Benchmark]: TraceAbstraction took 1928.16 ms. Allocated memory was 307.2 MB in the beginning and 484.4 MB in the end (delta: 177.2 MB). Free memory was 234.9 MB in the beginning and 425.3 MB in the end (delta: -190.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:25:45,380 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 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.76 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 307.2 MB. Free memory was 254.6 MB in the beginning and 252.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 235.46 ms. Allocated memory is still 307.2 MB. Free memory was 252.5 MB in the beginning and 234.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1928.16 ms. Allocated memory was 307.2 MB in the beginning and 484.4 MB in the end (delta: 177.2 MB). Free memory was 234.9 MB in the beginning and 425.3 MB in the end (delta: -190.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: cstrlcpyErr0EnsuresViolation CFG has 4 procedures, 46 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 46 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L561] int length = __VERIFIER_nondet_int(); [L562] int n = __VERIFIER_nondet_int(); [L563] COND TRUE length < 1 [L564] length = 1 VAL [length=1, n=2] [L566] COND FALSE !(n < 1) VAL [length=1, n=2] [L569] EXPR, FCALL __builtin_alloca (n * sizeof(char)) VAL [__builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2] [L569] char* nondetString1 = (char*) __builtin_alloca (n * sizeof(char)); VAL [__builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2, nondetString1={5:0}] [L570] EXPR, FCALL __builtin_alloca (length * sizeof(char)) VAL [__builtin_alloca (length * sizeof(char))={4:0}, __builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2, nondetString1={5:0}] [L570] char* nondetString2 = (char*) __builtin_alloca (length * sizeof(char)); VAL [__builtin_alloca (length * sizeof(char))={4:0}, __builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2, nondetString1={5:0}, nondetString2={4:0}] [L571] FCALL nondetString1[n-1] = '\0' VAL [__builtin_alloca (length * sizeof(char))={4:0}, __builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2, nondetString1={5:0}, nondetString2={4:0}] [L572] FCALL nondetString2[length-1] = '\0' VAL [__builtin_alloca (length * sizeof(char))={4:0}, __builtin_alloca (n * sizeof(char))={5:0}, length=1, n=2, nondetString1={5:0}, nondetString2={4:0}] [L573] CALL cstrlcpy(nondetString1, nondetString2, n) VAL [\old(siz)=2, dst={5:0}, src={4:0}] [L543] char *d = dst; [L544] const char *s = src; [L545] size_t n = siz; VAL [\old(siz)=2, d={5:0}, dst={5:0}, dst={5:0}, n=2, s={4:0}, siz=2, src={4:0}, src={4:0}] [L546] COND TRUE n != 0 VAL [\old(siz)=2, d={5:0}, dst={5:0}, dst={5:0}, n=2, s={4:0}, siz=2, src={4:0}, src={4:0}] [L547] EXPR --n VAL [--n=1, \old(siz)=2, d={5:0}, dst={5:0}, dst={5:0}, n=1, s={4:0}, siz=2, src={4:0}, src={4:0}] [L547] COND TRUE --n != 0 [L548] EXPR d++ [L548] EXPR s++ VAL [\old(siz)=2, d={5:1}, d++={5:0}, dst={5:0}, dst={5:0}, n=1, s={4:1}, s++=0, s++={4:0}, siz=2, src={4:0}, src={4:0}] [L548] EXPR, FCALL *d++ = *s++ VAL [\old(siz)=2, d={5:1}, d++={5:0}, dst={5:0}, dst={5:0}, n=1, s={4:1}, s++=0, s++={4:0}, siz=2, src={4:0}, src={4:0}] [L548] COND TRUE (*d++ = *s++) == '\0' [L552] COND FALSE !(n == 0) VAL [\old(siz)=2, d={5:1}, dst={5:0}, dst={5:0}, n=1, s={4:1}, siz=2, src={4:0}, src={4:0}] [L558] RET return(s - src - 1); VAL [\old(siz)=2, \result=0, d={5:1}, dst={5:0}, dst={5:0}, n=1, s={4:1}, siz=2, src={4:0}, src={4:0}] [L573] cstrlcpy(nondetString1, nondetString2, n) VAL [__builtin_alloca (length * sizeof(char))={4:0}, __builtin_alloca (n * sizeof(char))={5:0}, cstrlcpy(nondetString1, nondetString2, n)=0, length=1, n=2, nondetString1={5:0}, nondetString2={4:0}] [L574] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 46 locations, 4 error locations. UNSAFE Result, 1.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 133 SDslu, 376 SDs, 0 SdLazy, 96 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 12087 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 - PositiveResult [Line: 560]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 46 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 36 SDslu, 65 SDs, 0 SdLazy, 125 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 6429 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 - InvariantResult [Line: 547]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-25-45-390.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-25-45-390.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-25-45-390.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-25-45-390.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-25-45-390.csv Received shutdown request...