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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:17:49,039 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:17:49,041 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:17:49,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:17:49,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:17:49,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:17:49,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:17:49,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:17:49,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:17:49,060 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:17:49,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:17:49,061 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:17:49,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:17:49,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:17:49,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:17:49,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:17:49,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:17:49,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:17:49,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:17:49,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:17:49,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:17:49,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:17:49,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:17:49,080 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_preciseopt.epf [2018-01-21 08:17:49,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:17:49,091 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:17:49,092 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:17:49,092 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:17:49,092 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:17:49,092 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:17:49,092 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:17:49,093 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:17:49,093 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:17:49,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:17:49,094 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:17:49,094 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:17:49,094 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:17:49,094 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:17:49,095 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:17:49,096 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:17:49,096 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:17:49,096 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:17:49,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:17:49,097 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:17:49,097 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:17:49,097 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:17:49,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:17:49,097 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:17:49,098 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:17:49,098 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:17:49,098 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:17:49,098 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:17:49,098 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:17:49,099 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:17:49,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:17:49,099 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:17:49,099 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:17:49,100 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:17:49,100 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:17:49,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:17:49,147 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:17:49,151 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:17:49,153 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:17:49,153 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:17:49,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:17:49,319 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:17:49,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:17:49,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:17:49,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:17:49,334 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:17:49,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,340 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 21.01 08:17:49, skipping insertion in model container [2018-01-21 08:17:49,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,356 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:17:49,395 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:17:49,511 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:17:49,531 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:17:49,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49 WrapperNode [2018-01-21 08:17:49,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:17:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:17:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:17:49,538 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:17:49,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (1/1) ... [2018-01-21 08:17:49,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:17:49,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:17:49,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:17:49,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:17:49,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (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 [2018-01-21 08:17:49,621 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:17:49,621 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:17:49,621 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlcpy [2018-01-21 08:17:49,621 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:17:49,621 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:17:49,621 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlcpy [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:17:49,622 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:17:49,833 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:17:49,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:17:49 BoogieIcfgContainer [2018-01-21 08:17:49,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:17:49,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:17:49,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:17:49,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:17:49,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:17:49" (1/3) ... [2018-01-21 08:17:49,837 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 21.01 08:17:49, skipping insertion in model container [2018-01-21 08:17:49,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:49" (2/3) ... [2018-01-21 08:17:49,838 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 21.01 08:17:49, skipping insertion in model container [2018-01-21 08:17:49,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:17:49" (3/3) ... [2018-01-21 08:17:49,839 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:17:49,847 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:17:49,853 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:17:49,900 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:49,900 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:49,900 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:49,900 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:49,901 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:49,901 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:49,901 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:49,901 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrlcpyErr0EnsuresViolation======== [2018-01-21 08:17:49,902 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-21 08:17:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 08:17:49,931 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:49,932 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] [2018-01-21 08:17:49,932 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlcpyErr0EnsuresViolation]=== [2018-01-21 08:17:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1347338006, now seen corresponding path program 1 times [2018-01-21 08:17:49,941 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:49,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:49,998 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:49,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:49,998 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:50,063 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:50,115 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:50,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 08:17:50,116 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:50,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:17:50,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:17:50,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:17:50,133 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-01-21 08:17:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:50,156 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2018-01-21 08:17:50,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:17:50,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 08:17:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:50,164 INFO L225 Difference]: With dead ends: 67 [2018-01-21 08:17:50,164 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:17:50,168 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 [2018-01-21 08:17:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:17:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:17:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:17:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:17:50,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 08:17:50,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:50,266 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:17:50,266 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:17:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:17:50,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:17:50,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 08:17:50,308 INFO L404 ceAbstractionStarter]: At program point cstrlcpyENTRY(lines 540 559) the Hoare annotation is: true [2018-01-21 08:17:50,308 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 551) no Hoare annotation was computed. [2018-01-21 08:17:50,308 INFO L401 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-21 08:17:50,308 INFO L401 ceAbstractionStarter]: For program point L547(lines 547 550) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L401 ceAbstractionStarter]: For program point cstrlcpyFINAL(lines 540 559) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L401 ceAbstractionStarter]: For program point L546'(lines 546 551) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L401 ceAbstractionStarter]: For program point cstrlcpyErr0EnsuresViolation(lines 540 559) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L401 ceAbstractionStarter]: For program point L555'(line 555) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L401 ceAbstractionStarter]: For program point L547'(lines 547 550) no Hoare annotation was computed. [2018-01-21 08:17:50,309 INFO L404 ceAbstractionStarter]: At program point L547'''(lines 547 550) the Hoare annotation is: true [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L555''(line 555) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L553(lines 553 554) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L552(lines 552 557) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L555(lines 555 556) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-21 08:17:50,310 INFO L401 ceAbstractionStarter]: For program point cstrlcpyEXIT(lines 540 559) no Hoare annotation was computed. [2018-01-21 08:17:50,311 INFO L401 ceAbstractionStarter]: For program point L555''''(lines 555 556) no Hoare annotation was computed. [2018-01-21 08:17:50,311 INFO L401 ceAbstractionStarter]: For program point L548''(line 548) no Hoare annotation was computed. [2018-01-21 08:17:50,311 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,311 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,311 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 575) the Hoare annotation is: true [2018-01-21 08:17:50,311 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,312 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 575) the Hoare annotation is: true [2018-01-21 08:17:50,312 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,312 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 575) the Hoare annotation is: true [2018-01-21 08:17:50,312 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,312 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 575) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L571'(line 571) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L563(lines 563 565) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L569(line 569) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L570''(line 570) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L566'(lines 566 568) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 560 575) no Hoare annotation was computed. [2018-01-21 08:17:50,313 INFO L401 ceAbstractionStarter]: For program point L571(line 571) no Hoare annotation was computed. [2018-01-21 08:17:50,314 INFO L401 ceAbstractionStarter]: For program point L570(line 570) no Hoare annotation was computed. [2018-01-21 08:17:50,314 INFO L401 ceAbstractionStarter]: For program point L570'(line 570) no Hoare annotation was computed. [2018-01-21 08:17:50,314 INFO L401 ceAbstractionStarter]: For program point L570'''(line 570) no Hoare annotation was computed. [2018-01-21 08:17:50,314 INFO L401 ceAbstractionStarter]: For program point L573(line 573) no Hoare annotation was computed. [2018-01-21 08:17:50,314 INFO L404 ceAbstractionStarter]: At program point L572(line 572) the Hoare annotation is: true [2018-01-21 08:17:50,314 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 560 575) no Hoare annotation was computed. [2018-01-21 08:17:50,315 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 560 575) no Hoare annotation was computed. [2018-01-21 08:17:50,315 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 560 575) the Hoare annotation is: true [2018-01-21 08:17:50,315 INFO L401 ceAbstractionStarter]: For program point L563''(lines 563 565) no Hoare annotation was computed. [2018-01-21 08:17:50,315 INFO L401 ceAbstractionStarter]: For program point L569''(line 569) no Hoare annotation was computed. [2018-01-21 08:17:50,315 INFO L401 ceAbstractionStarter]: For program point L569'(line 569) no Hoare annotation was computed. [2018-01-21 08:17:50,319 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:50,319 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:50,319 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:50,319 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:50,319 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:50,320 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:50,320 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:50,320 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:17:50,320 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-21 08:17:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:17:50,322 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:50,323 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:17:50,323 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:17:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash 120061, now seen corresponding path program 1 times [2018-01-21 08:17:50,323 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:50,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,325 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:50,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,325 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:50,353 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:17:50,356 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:50,361 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:50,361 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:50,361 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:50,361 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:50,362 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:50,362 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:50,362 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:50,362 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:17:50,362 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-21 08:17:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 08:17:50,366 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:50,366 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] [2018-01-21 08:17:50,366 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:50,367 INFO L82 PathProgramCache]: Analyzing trace with hash 621811580, now seen corresponding path program 1 times [2018-01-21 08:17:50,367 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:50,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,368 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:50,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,368 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:50,393 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:50,463 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:50,463 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:17:50,463 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:50,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:17:50,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:17:50,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:17:50,465 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-21 08:17:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:50,492 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-01-21 08:17:50,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:17:50,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 08:17:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:50,497 INFO L225 Difference]: With dead ends: 71 [2018-01-21 08:17:50,498 INFO L226 Difference]: Without dead ends: 46 [2018-01-21 08:17:50,498 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 [2018-01-21 08:17:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-21 08:17:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-01-21 08:17:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-21 08:17:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-01-21 08:17:50,507 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 29 [2018-01-21 08:17:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:50,507 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-01-21 08:17:50,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:17:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-01-21 08:17:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 08:17:50,508 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:50,508 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] [2018-01-21 08:17:50,508 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1767468765, now seen corresponding path program 1 times [2018-01-21 08:17:50,509 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:50,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:50,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,510 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:50,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:50,796 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:50,796 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 08:17:50,796 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:50,799 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 08:17:50,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 08:17:50,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:17:50,800 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2018-01-21 08:17:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:50,930 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-01-21 08:17:50,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 08:17:50,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-01-21 08:17:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:50,933 INFO L225 Difference]: With dead ends: 90 [2018-01-21 08:17:50,933 INFO L226 Difference]: Without dead ends: 81 [2018-01-21 08:17:50,934 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-01-21 08:17:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-21 08:17:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2018-01-21 08:17:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 08:17:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2018-01-21 08:17:50,950 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2018-01-21 08:17:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:50,951 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2018-01-21 08:17:50,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 08:17:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2018-01-21 08:17:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 08:17:50,953 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:50,953 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] [2018-01-21 08:17:50,953 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:50,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1626920155, now seen corresponding path program 1 times [2018-01-21 08:17:50,953 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:50,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,954 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:50,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:50,954 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:50,976 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:51,076 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:51,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:17:51,076 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:51,077 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:17:51,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:17:51,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:17:51,077 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 4 states. [2018-01-21 08:17:51,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:51,110 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2018-01-21 08:17:51,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:17:51,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-21 08:17:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:51,113 INFO L225 Difference]: With dead ends: 89 [2018-01-21 08:17:51,113 INFO L226 Difference]: Without dead ends: 74 [2018-01-21 08:17:51,114 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 [2018-01-21 08:17:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-21 08:17:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-01-21 08:17:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-21 08:17:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2018-01-21 08:17:51,126 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 32 [2018-01-21 08:17:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:51,126 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2018-01-21 08:17:51,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:17:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2018-01-21 08:17:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-21 08:17:51,128 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:51,129 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] [2018-01-21 08:17:51,129 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1494185038, now seen corresponding path program 1 times [2018-01-21 08:17:51,129 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:51,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:51,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,131 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:51,151 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:51,236 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:51,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 08:17:51,236 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:51,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 08:17:51,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 08:17:51,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:17:51,237 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 6 states. [2018-01-21 08:17:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:51,282 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-01-21 08:17:51,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:17:51,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-21 08:17:51,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:51,284 INFO L225 Difference]: With dead ends: 90 [2018-01-21 08:17:51,284 INFO L226 Difference]: Without dead ends: 67 [2018-01-21 08:17:51,285 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 [2018-01-21 08:17:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-21 08:17:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-21 08:17:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-21 08:17:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2018-01-21 08:17:51,295 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 34 [2018-01-21 08:17:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:51,295 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2018-01-21 08:17:51,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 08:17:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2018-01-21 08:17:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 08:17:51,297 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:51,298 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] [2018-01-21 08:17:51,298 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:51,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1459560073, now seen corresponding path program 1 times [2018-01-21 08:17:51,298 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:51,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:51,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,300 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:51,360 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:17:51,368 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:51,374 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:51,376 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:51,376 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:51,390 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:51,391 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:51,391 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:51,391 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:51,391 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:51,391 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:51,391 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:51,391 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:17:51,391 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-21 08:17:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 08:17:51,393 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:51,393 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] [2018-01-21 08:17:51,393 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash -276447620, now seen corresponding path program 1 times [2018-01-21 08:17:51,393 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:51,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,394 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:51,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,394 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:51,406 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:51,427 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:51,427 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:17:51,427 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:51,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:17:51,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:17:51,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:17:51,428 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-21 08:17:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:51,450 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-01-21 08:17:51,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:17:51,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-21 08:17:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:51,453 INFO L225 Difference]: With dead ends: 71 [2018-01-21 08:17:51,453 INFO L226 Difference]: Without dead ends: 44 [2018-01-21 08:17:51,453 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 [2018-01-21 08:17:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-21 08:17:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-01-21 08:17:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-21 08:17:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-01-21 08:17:51,458 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 27 [2018-01-21 08:17:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:51,459 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-01-21 08:17:51,459 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:17:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-01-21 08:17:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 08:17:51,460 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:51,460 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] [2018-01-21 08:17:51,460 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash -538151453, now seen corresponding path program 1 times [2018-01-21 08:17:51,461 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:51,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,462 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:51,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:51,462 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:51,476 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:51,648 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:51,648 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:17:51,648 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:51,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 08:17:51,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 08:17:51,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:17:51,649 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2018-01-21 08:17:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:51,871 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-01-21 08:17:51,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 08:17:51,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-21 08:17:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:51,872 INFO L225 Difference]: With dead ends: 41 [2018-01-21 08:17:51,872 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:17:51,873 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-21 08:17:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:17:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:17:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:17:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:17:51,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-21 08:17:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:51,876 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:17:51,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 08:17:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:17:51,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:17:51,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:17:51 BoogieIcfgContainer [2018-01-21 08:17:51,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:17:51,881 INFO L168 Benchmark]: Toolchain (without parser) took 2561.36 ms. Allocated memory was 296.2 MB in the beginning and 472.9 MB in the end (delta: 176.7 MB). Free memory was 254.5 MB in the beginning and 419.8 MB in the end (delta: -165.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:51,883 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 296.2 MB. Free memory is still 260.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:17:51,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.52 ms. Allocated memory is still 296.2 MB. Free memory was 253.5 MB in the beginning and 243.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:51,883 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 296.2 MB. Free memory was 243.4 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:51,884 INFO L168 Benchmark]: RCFGBuilder took 263.54 ms. Allocated memory is still 296.2 MB. Free memory was 241.5 MB in the beginning and 223.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:51,884 INFO L168 Benchmark]: TraceAbstraction took 2045.82 ms. Allocated memory was 296.2 MB in the beginning and 472.9 MB in the end (delta: 176.7 MB). Free memory was 223.8 MB in the beginning and 419.8 MB in the end (delta: -196.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:17:51,886 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 296.2 MB. Free memory is still 260.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.52 ms. Allocated memory is still 296.2 MB. Free memory was 253.5 MB in the beginning and 243.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 296.2 MB. Free memory was 243.4 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 263.54 ms. Allocated memory is still 296.2 MB. Free memory was 241.5 MB in the beginning and 223.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2045.82 ms. Allocated memory was 296.2 MB in the beginning and 472.9 MB in the end (delta: 176.7 MB). Free memory was 223.8 MB in the beginning and 419.8 MB in the end (delta: -196.0 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, 0.4s 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, 0.2s 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, 0.0s SatisfiabilityAnalysisTime, 0.5s 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, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s 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, 0.1s 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_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-17-51-896.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-17-51-896.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-17-51-896.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-17-51-896.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-17-51-896.csv Received shutdown request...