java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:17:29,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:17:29,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:17:29,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:17:29,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:17:29,877 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:17:29,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:17:29,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:17:29,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:17:29,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:17:29,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:17:29,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:17:29,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:17:29,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:17:29,886 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:17:29,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:17:29,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:17:29,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:17:29,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:17:29,896 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:17:29,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:17:29,903 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:17:29,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:17:29,904 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-21 08:17:29,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:17:29,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:17:29,913 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:17:29,914 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:17:29,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:17:29,914 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:17:29,914 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:17:29,914 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:17:29,914 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:17:29,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:17:29,915 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:17:29,915 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:17:29,915 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:17:29,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:17:29,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:17:29,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:17:29,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:17:29,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:17:29,917 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:17:29,917 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:17:29,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:17:29,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:17:29,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:17:29,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:17:29,919 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:17:29,919 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:17:29,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:17:29,963 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:17:29,966 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:17:29,967 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:17:29,968 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:17:29,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:17:30,120 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:17:30,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:17:30,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:17:30,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:17:30,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:17:30,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91737b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30, skipping insertion in model container [2018-01-21 08:17:30,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,149 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:17:30,182 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:17:30,300 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:17:30,314 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:17:30,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30 WrapperNode [2018-01-21 08:17:30,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:17:30,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:17:30,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:17:30,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:17:30,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... [2018-01-21 08:17:30,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:17:30,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:17:30,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:17:30,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:17:30,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:17:30,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:17:30,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:17:30,408 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-21 08:17:30,408 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:17:30,408 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:17:30,408 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:17:30,408 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:17:30,408 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:17:30,408 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:17:30,409 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:17:30,409 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-21 08:17:30,409 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:17:30,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:17:30,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:17:30,563 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:17:30,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:17:30 BoogieIcfgContainer [2018-01-21 08:17:30,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:17:30,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:17:30,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:17:30,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:17:30,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:17:30" (1/3) ... [2018-01-21 08:17:30,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443d3627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:17:30, skipping insertion in model container [2018-01-21 08:17:30,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:17:30" (2/3) ... [2018-01-21 08:17:30,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443d3627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:17:30, skipping insertion in model container [2018-01-21 08:17:30,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:17:30" (3/3) ... [2018-01-21 08:17:30,570 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:17:30,578 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:17:30,584 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:17:30,631 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:30,632 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:30,632 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:30,632 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:30,632 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:30,632 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:30,632 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:30,633 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:17:30,633 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 08:17:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:17:30,662 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:30,663 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:17:30,663 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:17:30,669 INFO L82 PathProgramCache]: Analyzing trace with hash 77843, now seen corresponding path program 1 times [2018-01-21 08:17:30,672 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:30,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:30,730 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:30,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:30,731 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:30,795 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:17:30,801 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:30,807 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:30,807 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:30,808 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:30,808 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:30,808 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:30,808 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:30,808 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:30,808 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:17:30,808 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 08:17:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 08:17:30,811 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:30,811 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:17:30,811 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:30,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1662222853, now seen corresponding path program 1 times [2018-01-21 08:17:30,811 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:30,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:30,812 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:30,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:30,813 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:30,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:30,923 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:30,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:17:30,924 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:30,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:17:30,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:17:30,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:17:30,944 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 08:17:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,079 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 08:17:31,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:17:31,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-01-21 08:17:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,090 INFO L225 Difference]: With dead ends: 45 [2018-01-21 08:17:31,091 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 08:17:31,093 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 08:17:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 08:17:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-01-21 08:17:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-21 08:17:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-01-21 08:17:31,124 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 12 [2018-01-21 08:17:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,124 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-01-21 08:17:31,124 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:17:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-01-21 08:17:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 08:17:31,125 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,125 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:17:31,125 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:17:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1664069895, now seen corresponding path program 1 times [2018-01-21 08:17:31,125 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,126 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:17:31,153 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:17:31,156 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:31,157 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:31,157 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:17:31,163 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:31,163 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:31,163 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:31,163 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:31,163 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:31,163 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:31,163 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:31,163 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cbzeroErr0EnsuresViolation======== [2018-01-21 08:17:31,163 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 08:17:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 08:17:31,166 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,166 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:17:31,166 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0EnsuresViolation]=== [2018-01-21 08:17:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash -983978222, now seen corresponding path program 1 times [2018-01-21 08:17:31,166 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,167 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,167 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,167 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,167 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:31,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:31,198 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:31,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:17:31,198 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:31,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:17:31,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:17:31,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:17:31,198 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-01-21 08:17:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,201 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-01-21 08:17:31,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:17:31,201 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 08:17:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,202 INFO L225 Difference]: With dead ends: 41 [2018-01-21 08:17:31,202 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:17:31,202 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 08:17:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:17:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:17:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:17:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:17:31,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 08:17:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,203 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:17:31,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:17:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:17:31,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:17:31,206 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:17:31,207 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:17:31,207 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:17:31,207 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:17:31,207 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:17:31,207 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:17:31,207 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:17:31,207 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:17:31,207 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:17:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 08:17:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 08:17:31,209 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,209 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:17:31,209 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1759162219, now seen corresponding path program 1 times [2018-01-21 08:17:31,210 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,210 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:31,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:31,257 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:31,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:17:31,257 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:31,257 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:17:31,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:17:31,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:17:31,258 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 08:17:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,296 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-01-21 08:17:31,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:17:31,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-01-21 08:17:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,298 INFO L225 Difference]: With dead ends: 45 [2018-01-21 08:17:31,298 INFO L226 Difference]: Without dead ends: 27 [2018-01-21 08:17:31,299 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 08:17:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-21 08:17:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-01-21 08:17:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-21 08:17:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-01-21 08:17:31,304 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2018-01-21 08:17:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,304 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-01-21 08:17:31,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:17:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-01-21 08:17:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 08:17:31,305 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,305 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:17:31,306 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:31,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1759160297, now seen corresponding path program 1 times [2018-01-21 08:17:31,306 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,307 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,307 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:31,316 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:31,340 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:31,340 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:17:31,340 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:31,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:17:31,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:17:31,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:17:31,341 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2018-01-21 08:17:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,366 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-21 08:17:31,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:17:31,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-01-21 08:17:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,367 INFO L225 Difference]: With dead ends: 27 [2018-01-21 08:17:31,367 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 08:17:31,368 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 08:17:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 08:17:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 08:17:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 08:17:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-01-21 08:17:31,373 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-01-21 08:17:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,373 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-01-21 08:17:31,374 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:17:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-01-21 08:17:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 08:17:31,375 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,375 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 08:17:31,375 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1008979307, now seen corresponding path program 1 times [2018-01-21 08:17:31,375 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,377 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,377 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:31,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:31,541 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:31,541 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 08:17:31,541 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:31,542 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 08:17:31,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 08:17:31,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:17:31,542 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2018-01-21 08:17:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,583 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-01-21 08:17:31,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:17:31,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 08:17:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,585 INFO L225 Difference]: With dead ends: 42 [2018-01-21 08:17:31,585 INFO L226 Difference]: Without dead ends: 37 [2018-01-21 08:17:31,585 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 08:17:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-21 08:17:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-01-21 08:17:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-21 08:17:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-01-21 08:17:31,598 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2018-01-21 08:17:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,599 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-01-21 08:17:31,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 08:17:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-01-21 08:17:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 08:17:31,601 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:17:31,601 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 08:17:31,601 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 08:17:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2020096557, now seen corresponding path program 1 times [2018-01-21 08:17:31,602 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:17:31,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,603 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:17:31,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:17:31,603 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:17:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:17:31,623 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:17:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:17:31,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:17:31,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:17:31,683 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:17:31,683 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:17:31,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:17:31,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:17:31,683 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2018-01-21 08:17:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:17:31,733 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-01-21 08:17:31,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:17:31,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-21 08:17:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:17:31,734 INFO L225 Difference]: With dead ends: 32 [2018-01-21 08:17:31,734 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:17:31,735 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 08:17:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:17:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:17:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:17:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:17:31,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 08:17:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:17:31,736 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:17:31,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:17:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:17:31,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:17:31,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:17:31 BoogieIcfgContainer [2018-01-21 08:17:31,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:17:31,740 INFO L168 Benchmark]: Toolchain (without parser) took 1620.13 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 259.7 MB in the beginning and 370.8 MB in the end (delta: -111.1 MB). Peak memory consumption was 45.7 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:31,741 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 302.5 MB. Free memory is still 265.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:17:31,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.03 ms. Allocated memory is still 302.5 MB. Free memory was 259.7 MB in the beginning and 249.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:31,742 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 302.5 MB. Free memory was 249.7 MB in the beginning and 247.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:31,742 INFO L168 Benchmark]: RCFGBuilder took 206.76 ms. Allocated memory is still 302.5 MB. Free memory was 247.7 MB in the beginning and 232.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:31,742 INFO L168 Benchmark]: TraceAbstraction took 1174.66 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 232.6 MB in the beginning and 370.8 MB in the end (delta: -138.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:17:31,744 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 302.5 MB. Free memory is still 265.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.03 ms. Allocated memory is still 302.5 MB. Free memory was 259.7 MB in the beginning and 249.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 302.5 MB. Free memory was 249.7 MB in the beginning and 247.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 206.76 ms. Allocated memory is still 302.5 MB. Free memory was 247.7 MB in the beginning and 232.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1174.66 ms. Allocated memory was 302.5 MB in the beginning and 459.3 MB in the end (delta: 156.8 MB). Free memory was 232.6 MB in the beginning and 370.8 MB in the end (delta: -138.1 MB). Peak memory consumption was 18.6 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, 0.5s 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_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-17-31-753.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-17-31-753.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-17-31-753.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-17-31-753.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-17-31-753.csv Received shutdown request...