java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:35:35,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:35:35,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:35:35,409 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:35:35,409 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:35:35,410 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:35:35,411 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:35:35,413 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:35:35,416 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:35:35,417 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:35:35,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:35:35,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:35:35,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:35:35,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:35:35,421 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:35:35,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:35:35,426 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:35:35,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:35:35,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:35:35,432 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:35:35,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:35:35,440 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:35:35,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:35:35,449 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:35:35,450 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:35:35,450 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:35:35,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:35:35,450 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:35:35,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:35:35,450 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:35:35,451 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:35:35,451 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:35:35,451 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:35:35,451 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:35:35,451 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:35:35,451 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:35:35,452 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:35:35,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:35:35,453 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:35:35,453 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:35:35,453 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:35:35,454 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:35:35,454 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:35:35,455 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:35:35,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:35:35,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:35:35,455 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:35:35,455 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:35:35,456 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:35:35,456 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:35:35,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:35:35,500 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:35:35,504 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:35:35,505 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:35:35,505 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:35:35,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:35:35,681 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:35:35,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:35:35,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:35:35,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:35:35,692 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:35:35,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa34273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35, skipping insertion in model container [2018-01-21 05:35:35,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,709 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:35:35,748 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:35:35,866 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:35:35,880 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:35:35,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35 WrapperNode [2018-01-21 05:35:35,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:35:35,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:35:35,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:35:35,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:35:35,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... [2018-01-21 05:35:35,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:35:35,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:35:35,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:35:35,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:35:35,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:35:35,988 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:35:35,988 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:35:35,988 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-21 05:35:35,989 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:35:35,989 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:35:35,989 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:35:35,989 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:35:35,989 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:35:35,989 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:35:35,990 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:35:35,990 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-21 05:35:35,990 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:35:35,990 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:35:35,990 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:35:36,208 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:35:36,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:35:36 BoogieIcfgContainer [2018-01-21 05:35:36,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:35:36,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:35:36,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:35:36,213 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:35:36,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:35:35" (1/3) ... [2018-01-21 05:35:36,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75127f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:35:36, skipping insertion in model container [2018-01-21 05:35:36,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:35:35" (2/3) ... [2018-01-21 05:35:36,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75127f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:35:36, skipping insertion in model container [2018-01-21 05:35:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:35:36" (3/3) ... [2018-01-21 05:35:36,216 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:35:36,224 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:35:36,230 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:35:36,270 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:35:36,270 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:35:36,270 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:35:36,270 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:35:36,271 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:35:36,271 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:35:36,271 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:35:36,271 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:35:36,272 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:35:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:35:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:35:36,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,295 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:35:36,296 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:35:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash 77843, now seen corresponding path program 1 times [2018-01-21 05:35:36,302 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,344 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:35:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:35:36,407 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:35:36,415 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:35:36,423 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:35:36,423 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:35:36,423 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:35:36,423 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:35:36,423 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:35:36,424 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:35:36,424 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:35:36,424 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:35:36,424 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:35:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:35:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 05:35:36,427 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,427 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:35:36,427 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:35:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1662222853, now seen corresponding path program 1 times [2018-01-21 05:35:36,427 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,429 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:36,462 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:36,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:36,564 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:35:36,564 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:36,566 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:35:36,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:35:36,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:35:36,653 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 05:35:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:36,718 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 05:35:36,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 05:35:36,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-01-21 05:35:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:36,730 INFO L225 Difference]: With dead ends: 45 [2018-01-21 05:35:36,730 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 05:35:36,733 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 [2018-01-21 05:35:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 05:35:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-01-21 05:35:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-21 05:35:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-01-21 05:35:36,764 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 12 [2018-01-21 05:35:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:36,765 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-01-21 05:35:36,765 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:35:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-01-21 05:35:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 05:35:36,766 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,766 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:35:36,766 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:35:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1664069895, now seen corresponding path program 1 times [2018-01-21 05:35:36,766 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:35:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:35:36,798 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:35:36,801 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:35:36,802 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:35:36,802 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:35:36,807 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:35:36,807 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:35:36,808 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:35:36,808 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:35:36,808 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:35:36,808 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:35:36,808 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:35:36,808 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cbzeroErr0EnsuresViolation======== [2018-01-21 05:35:36,808 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:35:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:35:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 05:35:36,811 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,811 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:35:36,811 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0EnsuresViolation]=== [2018-01-21 05:35:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash -983978222, now seen corresponding path program 1 times [2018-01-21 05:35:36,812 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,813 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,813 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:36,828 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:36,847 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:36,847 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:35:36,847 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:36,848 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:35:36,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:35:36,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:35:36,848 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 05:35:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:36,852 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-01-21 05:35:36,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:35:36,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 05:35:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:36,853 INFO L225 Difference]: With dead ends: 41 [2018-01-21 05:35:36,853 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:35:36,853 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:35:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:35:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:35:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:35:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:35:36,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 05:35:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:36,854 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:35:36,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:35:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:35:36,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:35:36,857 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:35:36,858 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:35:36,858 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:35:36,858 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:35:36,858 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:35:36,858 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:35:36,858 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:35:36,858 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:35:36,858 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:35:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:35:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 05:35:36,861 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,861 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:35:36,861 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:35:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1759162219, now seen corresponding path program 1 times [2018-01-21 05:35:36,861 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,862 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,862 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:36,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:36,897 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:36,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:35:36,898 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:36,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:35:36,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:35:36,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:35:36,898 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 05:35:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:36,945 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 05:35:36,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 05:35:36,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-01-21 05:35:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:36,947 INFO L225 Difference]: With dead ends: 45 [2018-01-21 05:35:36,947 INFO L226 Difference]: Without dead ends: 27 [2018-01-21 05:35:36,948 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 [2018-01-21 05:35:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-21 05:35:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-01-21 05:35:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-21 05:35:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-01-21 05:35:36,952 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2018-01-21 05:35:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:36,952 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-01-21 05:35:36,952 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:35:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-01-21 05:35:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 05:35:36,952 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:36,953 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:35:36,953 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 05:35:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1759160297, now seen corresponding path program 1 times [2018-01-21 05:35:36,953 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:36,956 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,956 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:36,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:36,957 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:36,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:36,989 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:36,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:35:36,989 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:36,990 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:35:36,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:35:36,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:35:36,990 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2018-01-21 05:35:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:37,022 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-21 05:35:37,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:35:37,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 05:35:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:37,024 INFO L225 Difference]: With dead ends: 27 [2018-01-21 05:35:37,024 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 05:35:37,025 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 [2018-01-21 05:35:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 05:35:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 05:35:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 05:35:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-01-21 05:35:37,030 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-01-21 05:35:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:37,030 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-01-21 05:35:37,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:35:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-01-21 05:35:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 05:35:37,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:37,033 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] [2018-01-21 05:35:37,033 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 05:35:37,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1008979307, now seen corresponding path program 1 times [2018-01-21 05:35:37,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:37,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:37,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:37,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:37,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:37,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:37,205 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:37,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 05:35:37,205 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:37,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 05:35:37,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 05:35:37,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:35:37,206 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2018-01-21 05:35:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:37,243 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-01-21 05:35:37,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 05:35:37,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 05:35:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:37,245 INFO L225 Difference]: With dead ends: 42 [2018-01-21 05:35:37,245 INFO L226 Difference]: Without dead ends: 37 [2018-01-21 05:35:37,245 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:35:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-21 05:35:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-01-21 05:35:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-21 05:35:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-01-21 05:35:37,259 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2018-01-21 05:35:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:37,260 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-01-21 05:35:37,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 05:35:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-01-21 05:35:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 05:35:37,262 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:35:37,262 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] [2018-01-21 05:35:37,262 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 05:35:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2020096557, now seen corresponding path program 1 times [2018-01-21 05:35:37,263 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:35:37,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:37,264 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:35:37,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:35:37,264 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:35:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:35:37,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:35:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:35:37,371 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:35:37,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:35:37,371 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:35:37,371 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:35:37,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:35:37,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:35:37,372 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2018-01-21 05:35:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:35:37,487 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-01-21 05:35:37,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:35:37,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-21 05:35:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:35:37,489 INFO L225 Difference]: With dead ends: 32 [2018-01-21 05:35:37,489 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:35:37,489 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:35:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:35:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:35:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:35:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:35:37,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 05:35:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:35:37,491 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:35:37,491 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:35:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:35:37,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:35:37,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:35:37 BoogieIcfgContainer [2018-01-21 05:35:37,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:35:37,495 INFO L168 Benchmark]: Toolchain (without parser) took 1813.55 ms. Allocated memory was 299.9 MB in the beginning and 455.1 MB in the end (delta: 155.2 MB). Free memory was 258.2 MB in the beginning and 367.3 MB in the end (delta: -109.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 5.3 GB. [2018-01-21 05:35:37,496 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:35:37,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.56 ms. Allocated memory is still 299.9 MB. Free memory was 258.2 MB in the beginning and 247.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:35:37,497 INFO L168 Benchmark]: Boogie Preprocessor took 38.19 ms. Allocated memory is still 299.9 MB. Free memory was 247.2 MB in the beginning and 246.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 05:35:37,497 INFO L168 Benchmark]: RCFGBuilder took 285.15 ms. Allocated memory is still 299.9 MB. Free memory was 246.2 MB in the beginning and 231.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. [2018-01-21 05:35:37,498 INFO L168 Benchmark]: TraceAbstraction took 1283.05 ms. Allocated memory was 299.9 MB in the beginning and 455.1 MB in the end (delta: 155.2 MB). Free memory was 231.5 MB in the beginning and 367.3 MB in the end (delta: -135.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 5.3 GB. [2018-01-21 05:35:37,499 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 199.56 ms. Allocated memory is still 299.9 MB. Free memory was 258.2 MB in the beginning and 247.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.19 ms. Allocated memory is still 299.9 MB. Free memory was 247.2 MB in the beginning and 246.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 285.15 ms. Allocated memory is still 299.9 MB. Free memory was 246.2 MB in the beginning and 231.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1283.05 ms. Allocated memory was 299.9 MB in the beginning and 455.1 MB in the end (delta: 155.2 MB). Free memory was 231.5 MB in the beginning and 367.3 MB in the end (delta: -135.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L548] int length = __VERIFIER_nondet_int(); [L549] int n = __VERIFIER_nondet_int(); [L550] COND TRUE length < 1 [L551] length = 1 VAL [length=1, n=2] [L553] COND FALSE !(n < 1) VAL [length=1, n=2] [L556] COND TRUE n > length [L556] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 20 SDslu, 38 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: cbzeroErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 103 SDtfs, 43 SDslu, 139 SDs, 0 SdLazy, 72 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 3408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-35-37-509.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-35-37-509.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-35-37-509.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-35-37-509.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-35-37-509.csv Received shutdown request...