java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:45:36,488 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:45:36,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:45:36,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:45:36,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:45:36,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:45:36,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:45:36,508 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:45:36,510 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:45:36,511 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:45:36,512 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:45:36,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:45:36,513 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:45:36,514 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:45:36,515 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:45:36,517 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:45:36,519 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:45:36,521 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:45:36,522 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:45:36,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:45:36,526 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:45:36,526 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:45:36,526 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:45:36,527 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:45:36,528 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:45:36,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:45:36,530 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:45:36,530 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:45:36,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:45:36,531 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:45:36,531 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:45:36,532 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 16:45:36,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:45:36,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:45:36,540 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:45:36,540 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:45:36,541 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:45:36,541 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:45:36,541 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:45:36,541 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:45:36,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:45:36,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:45:36,542 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:45:36,543 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:45:36,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:45:36,544 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 16:45:36,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:45:36,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:45:36,545 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:45:36,545 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 16:45:36,545 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:45:36,546 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:45:36,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:45:36,587 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:45:36,590 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:45:36,591 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:45:36,592 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:45:36,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:45:36,740 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:45:36,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:45:36,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:45:36,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:45:36,752 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:45:36,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a0d6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36, skipping insertion in model container [2018-01-24 16:45:36,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,769 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:45:36,806 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:45:36,915 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:45:36,931 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:45:36,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36 WrapperNode [2018-01-24 16:45:36,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:45:36,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:45:36,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:45:36,940 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:45:36,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... [2018-01-24 16:45:36,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:45:36,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:45:36,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:45:36,975 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:45:36,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:45:37,021 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:45:37,021 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:45:37,021 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-24 16:45:37,022 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:45:37,022 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:45:37,022 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:45:37,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:45:37,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:45:37,022 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:45:37,023 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:45:37,023 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-24 16:45:37,023 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:45:37,023 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:45:37,023 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:45:37,165 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:45:37,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:45:37 BoogieIcfgContainer [2018-01-24 16:45:37,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:45:37,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 16:45:37,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 16:45:37,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 16:45:37,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:45:36" (1/3) ... [2018-01-24 16:45:37,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:45:37, skipping insertion in model container [2018-01-24 16:45:37,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:45:36" (2/3) ... [2018-01-24 16:45:37,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:45:37, skipping insertion in model container [2018-01-24 16:45:37,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:45:37" (3/3) ... [2018-01-24 16:45:37,173 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:45:37,182 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 16:45:37,189 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 16:45:37,237 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 16:45:37,237 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 16:45:37,237 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 16:45:37,237 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 16:45:37,237 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 16:45:37,238 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 16:45:37,238 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 16:45:37,238 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 16:45:37,239 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 16:45:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-01-24 16:45:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-24 16:45:37,263 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:37,263 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:37,264 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:37,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1815231445, now seen corresponding path program 1 times [2018-01-24 16:45:37,269 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:37,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,311 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:37,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,311 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:37,366 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:37,442 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:37,442 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:45:37,442 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:37,445 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:45:37,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:45:37,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:45:37,462 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-01-24 16:45:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:37,533 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-01-24 16:45:37,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:45:37,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-01-24 16:45:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:37,544 INFO L225 Difference]: With dead ends: 43 [2018-01-24 16:45:37,544 INFO L226 Difference]: Without dead ends: 29 [2018-01-24 16:45:37,607 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:45:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-24 16:45:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-01-24 16:45:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-24 16:45:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-01-24 16:45:37,634 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2018-01-24 16:45:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:37,635 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-01-24 16:45:37,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:45:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-01-24 16:45:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-24 16:45:37,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:37,635 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:37,635 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1815233367, now seen corresponding path program 1 times [2018-01-24 16:45:37,636 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:37,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:37,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,637 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:37,648 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:37,672 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:37,672 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 16:45:37,672 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:37,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 16:45:37,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 16:45:37,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 16:45:37,675 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-01-24 16:45:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:37,703 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-01-24 16:45:37,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 16:45:37,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-24 16:45:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:37,705 INFO L225 Difference]: With dead ends: 29 [2018-01-24 16:45:37,705 INFO L226 Difference]: Without dead ends: 27 [2018-01-24 16:45:37,706 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 16:45:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-24 16:45:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-01-24 16:45:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-24 16:45:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-01-24 16:45:37,710 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 10 [2018-01-24 16:45:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:37,710 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-01-24 16:45:37,710 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 16:45:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-01-24 16:45:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:45:37,711 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:37,711 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:37,711 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1377281886, now seen corresponding path program 1 times [2018-01-24 16:45:37,711 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:37,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,712 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:37,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,713 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:37,735 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:37,830 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:37,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 16:45:37,831 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:37,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 16:45:37,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 16:45:37,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 16:45:37,833 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2018-01-24 16:45:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:37,933 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-01-24 16:45:37,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 16:45:37,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-24 16:45:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:37,934 INFO L225 Difference]: With dead ends: 26 [2018-01-24 16:45:37,934 INFO L226 Difference]: Without dead ends: 25 [2018-01-24 16:45:37,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-24 16:45:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-24 16:45:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-01-24 16:45:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-24 16:45:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-01-24 16:45:37,939 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2018-01-24 16:45:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:37,939 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-01-24 16:45:37,939 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 16:45:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-01-24 16:45:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 16:45:37,940 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:37,942 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:37,942 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1377281887, now seen corresponding path program 1 times [2018-01-24 16:45:37,943 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:37,943 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,943 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:37,944 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:37,944 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:37,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:38,190 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:38,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 16:45:38,190 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:38,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 16:45:38,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 16:45:38,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 16:45:38,191 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2018-01-24 16:45:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:38,337 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-01-24 16:45:38,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 16:45:38,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-01-24 16:45:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:38,341 INFO L225 Difference]: With dead ends: 32 [2018-01-24 16:45:38,341 INFO L226 Difference]: Without dead ends: 31 [2018-01-24 16:45:38,342 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-01-24 16:45:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-24 16:45:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-01-24 16:45:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 16:45:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-24 16:45:38,348 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-01-24 16:45:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:38,348 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-24 16:45:38,348 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 16:45:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-24 16:45:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 16:45:38,349 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:38,349 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:38,350 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1525480681, now seen corresponding path program 1 times [2018-01-24 16:45:38,350 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:38,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:38,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:38,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:38,351 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:38,371 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:38,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:38,487 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:45:38,488 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-01-24 16:45:38,489 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [14], [15], [17], [18], [24], [27], [33], [40], [41], [42], [49], [50], [51], [53] [2018-01-24 16:45:38,540 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:45:38,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:45:38,749 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:45:38,750 INFO L268 AbstractInterpreter]: Visited 18 different actions 27 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 21 variables. [2018-01-24 16:45:38,765 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:45:38,765 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:38,765 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:45:38,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:38,777 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:38,820 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:38,847 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:38,947 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:38,947 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:45:38,950 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:38,951 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:38,998 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,014 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,030 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:45:39,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-01-24 16:45:39,031 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:45:39,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 16:45:39,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 16:45:39,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-01-24 16:45:39,032 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 8 states. [2018-01-24 16:45:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:39,143 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-01-24 16:45:39,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 16:45:39,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-24 16:45:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:39,145 INFO L225 Difference]: With dead ends: 60 [2018-01-24 16:45:39,145 INFO L226 Difference]: Without dead ends: 48 [2018-01-24 16:45:39,146 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-01-24 16:45:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-24 16:45:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2018-01-24 16:45:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-24 16:45:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-01-24 16:45:39,154 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 20 [2018-01-24 16:45:39,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:39,154 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-01-24 16:45:39,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 16:45:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-01-24 16:45:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 16:45:39,156 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:39,156 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:39,156 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2112286695, now seen corresponding path program 1 times [2018-01-24 16:45:39,156 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:39,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:39,158 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:39,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:39,158 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:39,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,319 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:39,319 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:45:39,319 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-01-24 16:45:39,320 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [14], [15], [17], [18], [24], [27], [35], [40], [41], [42], [49], [50], [51], [53] [2018-01-24 16:45:39,321 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:45:39,321 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:45:39,408 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:45:39,408 INFO L268 AbstractInterpreter]: Visited 18 different actions 27 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 21 variables. [2018-01-24 16:45:39,411 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:45:39,411 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:39,411 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:45:39,426 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:39,427 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:39,448 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,474 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,648 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:39,649 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:45:39,654 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:39,654 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:39,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,707 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:39,725 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:45:39,726 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-01-24 16:45:39,726 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:45:39,727 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 16:45:39,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 16:45:39,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-01-24 16:45:39,728 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 10 states. [2018-01-24 16:45:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:39,856 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2018-01-24 16:45:39,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 16:45:39,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-01-24 16:45:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:39,858 INFO L225 Difference]: With dead ends: 85 [2018-01-24 16:45:39,858 INFO L226 Difference]: Without dead ends: 73 [2018-01-24 16:45:39,858 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-01-24 16:45:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-24 16:45:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 42. [2018-01-24 16:45:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-24 16:45:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-01-24 16:45:39,870 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2018-01-24 16:45:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:39,870 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-01-24 16:45:39,871 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 16:45:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-01-24 16:45:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 16:45:39,871 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:39,871 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:39,872 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:39,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1171563351, now seen corresponding path program 1 times [2018-01-24 16:45:39,872 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:39,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:39,873 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:39,873 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:39,873 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:39,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:40,083 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:40,083 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:45:40,084 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-01-24 16:45:40,084 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [14], [15], [17], [18], [24], [29], [35], [40], [41], [42], [49], [50], [51], [53] [2018-01-24 16:45:40,085 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:45:40,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:45:40,162 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:45:40,163 INFO L268 AbstractInterpreter]: Visited 18 different actions 27 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 21 variables. [2018-01-24 16:45:40,180 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 16:45:40,180 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:40,181 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:45:40,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:40,191 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:40,214 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:40,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 16:45:40,234 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:45:40,254 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:45:40,254 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-24 16:45:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:40,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:40,762 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:40,778 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:45:40,781 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:40,781 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 16:45:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:40,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:40,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 16:45:40,826 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:45:40,832 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:45:40,832 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-24 16:45:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:40,948 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:41,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:45:41,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 34 [2018-01-24 16:45:41,015 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:45:41,015 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-24 16:45:41,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-24 16:45:41,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 16:45:41,016 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 22 states. [2018-01-24 16:45:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:41,360 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-01-24 16:45:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 16:45:41,361 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2018-01-24 16:45:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:41,362 INFO L225 Difference]: With dead ends: 52 [2018-01-24 16:45:41,362 INFO L226 Difference]: Without dead ends: 51 [2018-01-24 16:45:41,363 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=1667, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 16:45:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-24 16:45:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2018-01-24 16:45:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 16:45:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-01-24 16:45:41,371 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 20 [2018-01-24 16:45:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:41,371 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-01-24 16:45:41,371 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-24 16:45:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-01-24 16:45:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 16:45:41,372 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:41,372 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:41,372 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1556914830, now seen corresponding path program 1 times [2018-01-24 16:45:41,372 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:41,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,373 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:41,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,373 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:41,381 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:41,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:41,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 16:45:41,464 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:41,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 16:45:41,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 16:45:41,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 16:45:41,465 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 6 states. [2018-01-24 16:45:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:41,498 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-01-24 16:45:41,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:45:41,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-24 16:45:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:41,499 INFO L225 Difference]: With dead ends: 64 [2018-01-24 16:45:41,500 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 16:45:41,500 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 16:45:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 16:45:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2018-01-24 16:45:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 16:45:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-01-24 16:45:41,510 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 21 [2018-01-24 16:45:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:41,510 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-01-24 16:45:41,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 16:45:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-01-24 16:45:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 16:45:41,512 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:41,512 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:41,512 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:41,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1726935216, now seen corresponding path program 1 times [2018-01-24 16:45:41,513 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:41,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:41,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,514 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:41,527 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:41,591 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:45:41,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:45:41,592 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:45:41,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:45:41,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:45:41,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:45:41,593 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 4 states. [2018-01-24 16:45:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:41,631 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-01-24 16:45:41,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:45:41,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-24 16:45:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:41,632 INFO L225 Difference]: With dead ends: 52 [2018-01-24 16:45:41,632 INFO L226 Difference]: Without dead ends: 25 [2018-01-24 16:45:41,632 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:45:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-24 16:45:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-01-24 16:45:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-24 16:45:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-01-24 16:45:41,637 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 21 [2018-01-24 16:45:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:41,637 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-01-24 16:45:41,637 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:45:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-01-24 16:45:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 16:45:41,637 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:45:41,638 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:45:41,638 INFO L371 AbstractCegarLoop]: === Iteration 10 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 16:45:41,638 INFO L82 PathProgramCache]: Analyzing trace with hash 964772623, now seen corresponding path program 2 times [2018-01-24 16:45:41,638 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:45:41,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,639 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:45:41,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:45:41,639 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:45:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:45:41,657 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:45:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:41,991 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:41,991 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:45:41,991 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-24 16:45:41,992 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 16:45:41,992 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:41,992 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 16:45:41,998 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 16:45:41,999 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 16:45:42,012 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 16:45:42,021 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 16:45:42,024 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 16:45:42,027 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:42,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 16:45:42,039 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:45:42,078 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:45:42,078 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-24 16:45:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:42,432 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:42,950 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:45:42,950 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 16:45:42,954 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 16:45:42,954 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 16:45:42,966 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 16:45:42,979 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 16:45:42,994 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 16:45:42,998 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 16:45:43,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 16:45:43,003 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 16:45:43,007 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 16:45:43,007 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-24 16:45:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:43,135 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 16:45:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:45:43,257 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 16:45:43,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14, 14, 14] total 41 [2018-01-24 16:45:43,257 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 16:45:43,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 16:45:43,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 16:45:43,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 16:45:43,259 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 27 states. [2018-01-24 16:45:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:45:43,902 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-01-24 16:45:43,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-24 16:45:43,903 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 24 [2018-01-24 16:45:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:45:43,903 INFO L225 Difference]: With dead ends: 30 [2018-01-24 16:45:43,903 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 16:45:43,904 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=336, Invalid=2744, Unknown=0, NotChecked=0, Total=3080 [2018-01-24 16:45:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 16:45:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 16:45:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 16:45:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 16:45:43,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-24 16:45:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:45:43,905 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 16:45:43,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 16:45:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 16:45:43,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 16:45:43,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 16:45:44,115 WARN L146 SmtUtils]: Spent 137ms on a formula simplification. DAG size of input: 63 DAG size of output 46 [2018-01-24 16:45:44,150 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,150 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 16:45:44,150 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,150 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 560) the Hoare annotation is: true [2018-01-24 16:45:44,150 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,150 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 560) the Hoare annotation is: true [2018-01-24 16:45:44,150 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point L544'''(lines 544 545) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point cbzeroEXIT(lines 540 546) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L404 ceAbstractionStarter]: At program point cbzeroENTRY(lines 540 546) the Hoare annotation is: true [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point L545(line 545) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point L544(lines 544 545) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point cbzeroErr0RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point L545'(line 545) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L397 ceAbstractionStarter]: At program point L544''(lines 544 545) the Hoare annotation is: (let ((.cse1 (= 0 cbzero_~p~2.offset)) (.cse0 (not (= 0 |cbzero_#in~b.offset|))) (.cse3 (<= cbzero_~p~2.offset 1)) (.cse2 (< |cbzero_#in~length| 1)) (.cse4 (< (select |#length| |cbzero_#in~b.base|) |cbzero_#in~length|)) (.cse5 (not (= (select |#valid| |cbzero_#in~b.base|) 1)))) (and (or (< 1 |cbzero_#in~length|) .cse0 .cse1 .cse2 (and .cse3 (<= cbzero_~length 0)) .cse4 .cse5) (let ((.cse7 (select |#length| cbzero_~p~2.base)) (.cse6 (= 1 (select |#valid| cbzero_~p~2.base))) (.cse8 (<= 0 cbzero_~length))) (or (and .cse6 (<= cbzero_~length |cbzero_#in~length|) (<= |cbzero_#in~length| cbzero_~length) .cse1 (<= cbzero_~length .cse7)) .cse0 (and (<= (+ cbzero_~length 1) .cse7) .cse3 .cse6 (<= 1 cbzero_~p~2.offset) .cse8) .cse2 .cse4 .cse5 (and (<= 2 cbzero_~p~2.offset) (<= (+ cbzero_~length cbzero_~p~2.offset) .cse7) .cse6 .cse8))))) [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point cbzeroErr1RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-24 16:45:44,151 INFO L401 ceAbstractionStarter]: For program point L550(lines 550 552) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L553'(lines 553 555) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L557(line 557) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 547 560) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L397 ceAbstractionStarter]: At program point L558(line 558) the Hoare annotation is: (and (= 0 |main_#t~malloc5.offset|) (<= 1 main_~n~4) (= 1 (select |#valid| main_~nondetArea~4.base)) (= 0 main_~nondetArea~4.offset) (<= main_~n~4 main_~length~4) (<= main_~n~4 (select |#length| main_~nondetArea~4.base)) (= 1 (select |#valid| |main_#t~malloc5.base|)) (<= main_~n~4 (select |#length| |main_#t~malloc5.base|)) (= (store |#valid| |main_#t~malloc5.base| (select (store |#valid| |main_#t~malloc5.base| 0) |main_#t~malloc5.base|)) |old(#valid)|)) [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 547 560) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 547 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L557'''(line 557) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L550''(lines 550 552) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L557'(line 557) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L558'(line 558) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point L557''(line 557) no Hoare annotation was computed. [2018-01-24 16:45:44,152 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 547 560) no Hoare annotation was computed. [2018-01-24 16:45:44,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,160 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,161 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,161 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,161 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,166 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,166 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,166 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,166 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,167 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 04:45:44 BoogieIcfgContainer [2018-01-24 16:45:44,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 16:45:44,170 INFO L168 Benchmark]: Toolchain (without parser) took 7429.35 ms. Allocated memory was 304.1 MB in the beginning and 540.5 MB in the end (delta: 236.5 MB). Free memory was 264.1 MB in the beginning and 415.7 MB in the end (delta: -151.5 MB). Peak memory consumption was 84.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:45:44,171 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:45:44,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.66 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:45:44,172 INFO L168 Benchmark]: Boogie Preprocessor took 34.84 ms. Allocated memory is still 304.1 MB. Free memory was 253.0 MB in the beginning and 252.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-24 16:45:44,173 INFO L168 Benchmark]: RCFGBuilder took 191.31 ms. Allocated memory is still 304.1 MB. Free memory was 252.1 MB in the beginning and 237.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:45:44,173 INFO L168 Benchmark]: TraceAbstraction took 7002.73 ms. Allocated memory was 304.1 MB in the beginning and 540.5 MB in the end (delta: 236.5 MB). Free memory was 237.5 MB in the beginning and 415.7 MB in the end (delta: -178.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 5.3 GB. [2018-01-24 16:45:44,175 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 192.66 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.84 ms. Allocated memory is still 304.1 MB. Free memory was 253.0 MB in the beginning and 252.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 191.31 ms. Allocated memory is still 304.1 MB. Free memory was 252.1 MB in the beginning and 237.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 7002.73 ms. Allocated memory was 304.1 MB in the beginning and 540.5 MB in the end (delta: 236.5 MB). Free memory was 237.5 MB in the beginning and 415.7 MB in the end (delta: -178.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 138 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 24 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 3 TransStat_NO_DISJUNCTIONS : 25 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.783361 RENAME_VARIABLES(MILLISECONDS) : 0.337685 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.705676 PROJECTAWAY(MILLISECONDS) : 0.304359 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001750 DISJOIN(MILLISECONDS) : 0.643760 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.382497 ADD_EQUALITY(MILLISECONDS) : 0.068057 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.032342 #CONJOIN_DISJUNCTIVE : 46 #RENAME_VARIABLES : 75 #UNFREEZE : 0 #CONJOIN : 82 #PROJECTAWAY : 64 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 71 #ADD_EQUALITY : 47 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 132 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 24 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 3 TransStat_NO_DISJUNCTIONS : 25 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.439065 RENAME_VARIABLES(MILLISECONDS) : 0.215106 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.395705 PROJECTAWAY(MILLISECONDS) : 0.195157 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001183 DISJOIN(MILLISECONDS) : 0.432982 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.244253 ADD_EQUALITY(MILLISECONDS) : 0.043430 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017863 #CONJOIN_DISJUNCTIVE : 45 #RENAME_VARIABLES : 75 #UNFREEZE : 0 #CONJOIN : 81 #PROJECTAWAY : 64 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 71 #ADD_EQUALITY : 47 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 126 LocStat_NO_SUPPORTING_DISEQUALITIES : 10 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 24 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 3 TransStat_NO_DISJUNCTIONS : 25 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.371083 RENAME_VARIABLES(MILLISECONDS) : 0.183576 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.328012 PROJECTAWAY(MILLISECONDS) : 0.211028 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001392 DISJOIN(MILLISECONDS) : 0.409099 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.214653 ADD_EQUALITY(MILLISECONDS) : 0.034529 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.049798 #CONJOIN_DISJUNCTIVE : 44 #RENAME_VARIABLES : 75 #UNFREEZE : 0 #CONJOIN : 80 #PROJECTAWAY : 64 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 5 #RENAME_VARIABLES_DISJUNCTIVE : 71 #ADD_EQUALITY : 47 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 544]: Loop Invariant [2018-01-24 16:45:44,184 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,185 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,185 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,185 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,185 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,188 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,188 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,188 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,188 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 16:45:44,188 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((((1 < \old(length) || !(0 == b)) || 0 == p) || \old(length) < 1) || (p <= 1 && length <= 0)) || unknown-#length-unknown[b] < \old(length)) || !(\valid[b] == 1)) && ((((((((((1 == \valid[p] && length <= \old(length)) && \old(length) <= length) && 0 == p) && length <= unknown-#length-unknown[p]) || !(0 == b)) || ((((length + 1 <= unknown-#length-unknown[p] && p <= 1) && 1 == \valid[p]) && 1 <= p) && 0 <= length)) || \old(length) < 1) || unknown-#length-unknown[b] < \old(length)) || !(\valid[b] == 1)) || (((2 <= p && length + p <= unknown-#length-unknown[p]) && 1 == \valid[p]) && 0 <= length)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 3 error locations. SAFE Result, 6.9s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 223 SDtfs, 214 SDslu, 913 SDs, 0 SdLazy, 676 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 268 SyntacticMatches, 14 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 171 HoareAnnotationTreeSize, 11 FomulaSimplifications, 236 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 372 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 488 ConstructedInterpolants, 4 QuantifiedInterpolants, 74178 SizeOfPredicates, 71 NumberOfNonLiveVariables, 850 ConjunctsInSsa, 258 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 10/95 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-24_16-45-44-194.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_16-45-44-194.csv Received shutdown request...