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_smtcomp.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 10:07:24,542 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:07:24,544 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:07:24,559 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:07:24,559 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:07:24,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:07:24,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:07:24,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:07:24,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:07:24,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:07:24,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:07:24,568 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:07:24,569 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:07:24,570 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:07:24,571 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:07:24,574 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:07:24,576 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:07:24,578 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:07:24,579 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:07:24,580 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:07:24,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:07:24,587 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:07:24,588 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:07:24,589 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_smtcomp.epf [2018-01-21 10:07:24,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:07:24,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:07:24,598 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:07:24,598 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:07:24,598 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:07:24,598 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:07:24,598 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:07:24,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:07:24,599 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:07:24,599 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:07:24,599 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:07:24,599 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:07:24,599 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:07:24,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:07:24,601 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:07:24,601 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:07:24,601 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:07:24,601 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:07:24,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:07:24,602 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:07:24,603 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:07:24,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:07:24,603 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:07:24,603 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:07:24,604 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:07:24,604 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:07:24,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:07:24,648 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:07:24,652 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:07:24,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:07:24,654 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:07:24,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:07:24,827 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:07:24,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:07:24,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:07:24,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:07:24,838 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:07:24,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:07:24" (1/1) ... [2018-01-21 10:07:24,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f10f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:24, skipping insertion in model container [2018-01-21 10:07:24,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:07:24" (1/1) ... [2018-01-21 10:07:24,856 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:07:24,894 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:07:25,014 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:07:25,030 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:07:25,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25 WrapperNode [2018-01-21 10:07:25,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:07:25,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:07:25,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:07:25,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:07:25,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (1/1) ... [2018-01-21 10:07:25,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:07:25,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:07:25,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:07:25,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:07:25,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (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 10:07:25,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:07:25,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:07:25,125 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-21 10:07:25,126 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:07:25,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:07:25,127 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:07:25,292 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:07:25,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:07:25 BoogieIcfgContainer [2018-01-21 10:07:25,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:07:25,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:07:25,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:07:25,297 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:07:25,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:07:24" (1/3) ... [2018-01-21 10:07:25,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515efc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:07:25, skipping insertion in model container [2018-01-21 10:07:25,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:25" (2/3) ... [2018-01-21 10:07:25,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515efc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:07:25, skipping insertion in model container [2018-01-21 10:07:25,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:07:25" (3/3) ... [2018-01-21 10:07:25,301 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:07:25,310 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:07:25,317 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:07:25,358 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:25,359 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:25,359 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:25,359 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:25,359 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:25,359 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:25,359 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:25,359 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:07:25,360 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 10:07:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:07:25,386 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,387 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:07:25,387 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:07:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash 77843, now seen corresponding path program 1 times [2018-01-21 10:07:25,395 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,437 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:25,486 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:07:25,493 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:25,498 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:25,498 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:25,499 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:25,499 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:25,499 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:25,499 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:25,499 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:25,499 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:07:25,499 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 10:07:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 10:07:25,501 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,501 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:07:25,501 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1662222853, now seen corresponding path program 1 times [2018-01-21 10:07:25,502 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,503 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,503 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:25,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:25,603 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 10:07:25,604 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:25,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:07:25,605 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:25,606 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:07:25,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:07:25,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:07:25,686 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 10:07:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:25,741 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 10:07:25,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:07:25,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-01-21 10:07:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:25,755 INFO L225 Difference]: With dead ends: 45 [2018-01-21 10:07:25,756 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 10:07:25,758 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 10:07:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 10:07:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-01-21 10:07:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-21 10:07:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-01-21 10:07:25,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 12 [2018-01-21 10:07:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:25,791 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-01-21 10:07:25,791 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:07:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-01-21 10:07:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 10:07:25,791 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,792 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:07:25,792 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1664069895, now seen corresponding path program 1 times [2018-01-21 10:07:25,792 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,793 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,793 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:25,821 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:07:25,824 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:25,825 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:25,825 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:25,832 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:25,832 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:25,832 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:25,832 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:25,832 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:25,833 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:25,833 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:25,833 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cbzeroErr0EnsuresViolation======== [2018-01-21 10:07:25,833 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 10:07:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 10:07:25,835 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,836 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:07:25,836 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0EnsuresViolation]=== [2018-01-21 10:07:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash -983978222, now seen corresponding path program 1 times [2018-01-21 10:07:25,836 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,837 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,837 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,838 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:25,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:25,867 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 10:07:25,868 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:25,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:07:25,868 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:25,868 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:07:25,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:07:25,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:07:25,869 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 10:07:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:25,871 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-01-21 10:07:25,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:07:25,871 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 10:07:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:25,872 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:07:25,872 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:07:25,872 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 10:07:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:07:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:07:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:07:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:07:25,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 10:07:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:25,873 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:07:25,873 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:07:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:07:25,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:07:25,875 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:25,875 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:25,875 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:25,875 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:25,876 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:25,876 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:25,876 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:25,876 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:07:25,876 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 10:07:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 10:07:25,877 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,877 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:07:25,877 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1759162219, now seen corresponding path program 1 times [2018-01-21 10:07:25,878 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,879 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:25,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:25,922 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 10:07:25,922 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:25,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:07:25,922 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:25,923 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:07:25,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:07:25,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:07:25,923 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 10:07:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:25,955 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 10:07:25,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:07:25,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-01-21 10:07:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:25,956 INFO L225 Difference]: With dead ends: 45 [2018-01-21 10:07:25,957 INFO L226 Difference]: Without dead ends: 27 [2018-01-21 10:07:25,957 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 10:07:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-21 10:07:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-01-21 10:07:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-21 10:07:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-01-21 10:07:25,962 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2018-01-21 10:07:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:25,963 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-01-21 10:07:25,963 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:07:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-01-21 10:07:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 10:07:25,964 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:25,964 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:07:25,964 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1759160297, now seen corresponding path program 1 times [2018-01-21 10:07:25,964 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:25,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,965 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:25,966 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:25,966 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:25,974 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:25,991 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 10:07:25,992 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:25,992 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:07:25,992 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:25,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:07:25,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:07:25,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:07:25,993 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2018-01-21 10:07:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:26,022 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-21 10:07:26,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:07:26,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 10:07:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:26,024 INFO L225 Difference]: With dead ends: 27 [2018-01-21 10:07:26,024 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 10:07:26,025 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 10:07:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 10:07:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 10:07:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 10:07:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-01-21 10:07:26,030 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-01-21 10:07:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:26,030 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-01-21 10:07:26,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:07:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-01-21 10:07:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:07:26,031 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:26,031 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 10:07:26,031 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1008979307, now seen corresponding path program 1 times [2018-01-21 10:07:26,032 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:26,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:26,033 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:26,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:26,033 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:26,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:26,153 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 10:07:26,153 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:26,153 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:07:26,153 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:26,153 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:07:26,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:07:26,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:07:26,154 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2018-01-21 10:07:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:26,197 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-01-21 10:07:26,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:07:26,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 10:07:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:26,198 INFO L225 Difference]: With dead ends: 42 [2018-01-21 10:07:26,198 INFO L226 Difference]: Without dead ends: 37 [2018-01-21 10:07:26,199 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 [2018-01-21 10:07:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-21 10:07:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-01-21 10:07:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-21 10:07:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-01-21 10:07:26,212 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2018-01-21 10:07:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:26,213 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-01-21 10:07:26,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:07:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-01-21 10:07:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:07:26,215 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:26,215 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 10:07:26,215 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2020096557, now seen corresponding path program 1 times [2018-01-21 10:07:26,216 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:26,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:26,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:26,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:26,217 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:26,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:07:26,296 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 10:07:26,297 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:26,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 10:07:26,297 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:26,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:07:26,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:07:26,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:07:26,298 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2018-01-21 10:07:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:26,354 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-01-21 10:07:26,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:07:26,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-21 10:07:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:26,355 INFO L225 Difference]: With dead ends: 32 [2018-01-21 10:07:26,355 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:07:26,356 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 10:07:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:07:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:07:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:07:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:07:26,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 10:07:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:26,357 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:07:26,357 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:07:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:07:26,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:07:26,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:07:26 BoogieIcfgContainer [2018-01-21 10:07:26,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:07:26,361 INFO L168 Benchmark]: Toolchain (without parser) took 1532.91 ms. Allocated memory was 299.4 MB in the beginning and 453.0 MB in the end (delta: 153.6 MB). Free memory was 258.3 MB in the beginning and 363.7 MB in the end (delta: -105.4 MB). Peak memory consumption was 48.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:07:26,362 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 299.4 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:07:26,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.55 ms. Allocated memory is still 299.4 MB. Free memory was 258.3 MB in the beginning and 248.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:07:26,362 INFO L168 Benchmark]: Boogie Preprocessor took 30.33 ms. Allocated memory is still 299.4 MB. Free memory was 248.3 MB in the beginning and 246.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:07:26,363 INFO L168 Benchmark]: RCFGBuilder took 224.07 ms. Allocated memory is still 299.4 MB. Free memory was 246.3 MB in the beginning and 231.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:07:26,363 INFO L168 Benchmark]: TraceAbstraction took 1065.81 ms. Allocated memory was 299.4 MB in the beginning and 453.0 MB in the end (delta: 153.6 MB). Free memory was 231.3 MB in the beginning and 363.7 MB in the end (delta: -132.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:07:26,365 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 299.4 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 205.55 ms. Allocated memory is still 299.4 MB. Free memory was 258.3 MB in the beginning and 248.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.33 ms. Allocated memory is still 299.4 MB. Free memory was 248.3 MB in the beginning and 246.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 224.07 ms. Allocated memory is still 299.4 MB. Free memory was 246.3 MB in the beginning and 231.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1065.81 ms. Allocated memory was 299.4 MB in the beginning and 453.0 MB in the end (delta: 153.6 MB). Free memory was 231.3 MB in the beginning and 363.7 MB in the end (delta: -132.5 MB). Peak memory consumption was 21.1 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, 0.0s 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, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s 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_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-07-26-373.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-07-26-373.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-07-26-373.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-07-26-373.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-07-26-373.csv Received shutdown request...