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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:30:52,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:30:52,829 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:30:52,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:30:52,843 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:30:52,844 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:30:52,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:30:52,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:30:52,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:30:52,848 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:30:52,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:30:52,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:30:52,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:30:52,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:30:52,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:30:52,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:30:52,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:30:52,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:30:52,858 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:30:52,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:30:52,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:30:52,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:30:52,867 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:30:52,867 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_imprecise.epf [2018-01-21 00:30:52,876 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:30:52,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:30:52,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:30:52,877 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:30:52,877 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:30:52,878 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:30:52,878 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:30:52,878 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:30:52,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:30:52,879 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:30:52,879 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:30:52,879 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:30:52,879 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:30:52,879 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:30:52,880 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:30:52,881 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:30:52,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:30:52,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:30:52,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:30:52,881 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:30:52,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:30:52,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:30:52,882 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:30:52,882 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:30:52,882 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:30:52,883 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:30:52,884 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:30:52,884 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:30:52,885 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:30:52,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:30:52,928 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:30:52,932 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:30:52,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:30:52,933 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:30:52,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:53,087 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:30:53,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:30:53,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:53,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:30:53,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:30:53,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449793cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53, skipping insertion in model container [2018-01-21 00:30:53,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,122 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:53,163 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:53,278 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:53,303 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:53,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53 WrapperNode [2018-01-21 00:30:53,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:53,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:30:53,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:30:53,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:30:53,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (1/1) ... [2018-01-21 00:30:53,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:30:53,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:30:53,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:30:53,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:30:53,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (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 00:30:53,392 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:30:53,392 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:30:53,393 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-21 00:30:53,393 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-01-21 00:30:53,393 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrstr [2018-01-21 00:30:53,393 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:30:53,393 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:30:53,393 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:30:53,393 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:30:53,393 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:30:53,393 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure cstrstr [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:30:53,394 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:30:53,395 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:30:53,696 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:30:53,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:53 BoogieIcfgContainer [2018-01-21 00:30:53,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:30:53,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:30:53,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:30:53,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:30:53,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:30:53" (1/3) ... [2018-01-21 00:30:53,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9bdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:53, skipping insertion in model container [2018-01-21 00:30:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:53" (2/3) ... [2018-01-21 00:30:53,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9bdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:53, skipping insertion in model container [2018-01-21 00:30:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:53" (3/3) ... [2018-01-21 00:30:53,703 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:53,710 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:30:53,717 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 00:30:53,756 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:53,756 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:53,757 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:53,757 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:53,757 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:53,757 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:53,757 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:53,757 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:30:53,758 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:30:53,779 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:53,780 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:30:53,781 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:30:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash 164333, now seen corresponding path program 1 times [2018-01-21 00:30:53,787 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:53,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:53,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:53,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:53,830 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:53,881 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:53,887 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:53,894 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:53,895 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:53,895 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:53,895 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:53,895 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:53,895 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:53,895 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:53,895 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrlenErr0EnsuresViolation======== [2018-01-21 00:30:53,896 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 00:30:53,900 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:53,900 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:53,901 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr0EnsuresViolation]=== [2018-01-21 00:30:53,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1759698364, now seen corresponding path program 1 times [2018-01-21 00:30:53,901 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:53,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:53,902 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:53,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:53,903 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:53,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:54,091 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 00:30:54,092 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:54,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:30:54,129 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:54,132 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:30:54,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:30:54,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:54,151 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 2 states. [2018-01-21 00:30:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:54,177 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2018-01-21 00:30:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:30:54,179 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-21 00:30:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:54,184 INFO L225 Difference]: With dead ends: 121 [2018-01-21 00:30:54,184 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:54,187 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 00:30:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:54,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-21 00:30:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:54,209 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:54,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:30:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:54,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:54,212 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:54,212 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:54,212 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:54,212 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:54,212 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:54,212 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:54,212 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:54,212 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:30:54,212 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:30:54,215 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:54,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:54,215 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash 880685945, now seen corresponding path program 1 times [2018-01-21 00:30:54,216 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:54,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:54,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,217 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:54,274 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:54,281 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:54,283 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:54,285 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:54,285 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:54,295 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:54,295 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:54,295 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:54,295 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:54,295 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:54,295 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:54,295 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:54,295 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:30:54,295 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 00:30:54,298 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:54,298 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:54,298 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:54,299 INFO L82 PathProgramCache]: Analyzing trace with hash 443374032, now seen corresponding path program 1 times [2018-01-21 00:30:54,299 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:54,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,300 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:54,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,300 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:54,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:54,577 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 00:30:54,577 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:54,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:30:54,577 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:54,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:30:54,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:30:54,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:30:54,578 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 6 states. [2018-01-21 00:30:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:54,933 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2018-01-21 00:30:54,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:30:54,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-01-21 00:30:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:54,934 INFO L225 Difference]: With dead ends: 120 [2018-01-21 00:30:54,934 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:54,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:54,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-01-21 00:30:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:54,936 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:54,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:30:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:54,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:54,938 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:54,939 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:54,939 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:54,939 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:54,939 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:54,939 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:54,939 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:54,939 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncmpErr0EnsuresViolation======== [2018-01-21 00:30:54,939 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:30:54,941 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:54,941 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:54,941 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncmpErr0EnsuresViolation]=== [2018-01-21 00:30:54,941 INFO L82 PathProgramCache]: Analyzing trace with hash -523618711, now seen corresponding path program 1 times [2018-01-21 00:30:54,941 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:54,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,942 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:54,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,942 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:54,956 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:54,975 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 00:30:54,975 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:54,976 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:30:54,976 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:54,976 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:30:54,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:30:54,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:54,977 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 2 states. [2018-01-21 00:30:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:54,984 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2018-01-21 00:30:54,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:30:54,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2018-01-21 00:30:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:54,985 INFO L225 Difference]: With dead ends: 121 [2018-01-21 00:30:54,985 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:54,986 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 00:30:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:54,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-01-21 00:30:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:54,987 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:54,987 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:30:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:54,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:54,989 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:54,990 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:54,990 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:54,990 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:54,990 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:54,990 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:54,990 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:54,990 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrstrErr0EnsuresViolation======== [2018-01-21 00:30:54,991 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-01-21 00:30:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 00:30:54,993 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:54,993 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 00:30:54,993 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrstrErr0EnsuresViolation]=== [2018-01-21 00:30:54,994 INFO L82 PathProgramCache]: Analyzing trace with hash -825684058, now seen corresponding path program 1 times [2018-01-21 00:30:54,994 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:54,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,995 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:54,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:54,995 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:55,005 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:30:55,019 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 00:30:55,019 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:55,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 00:30:55,019 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:55,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:30:55,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:30:55,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:55,021 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 2 states. [2018-01-21 00:30:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:55,027 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2018-01-21 00:30:55,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:30:55,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 00:30:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:55,028 INFO L225 Difference]: With dead ends: 121 [2018-01-21 00:30:55,029 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:55,030 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:30:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:55,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 00:30:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:55,031 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:55,031 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:30:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:55,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:55,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:30:55 BoogieIcfgContainer [2018-01-21 00:30:55,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:30:55,034 INFO L168 Benchmark]: Toolchain (without parser) took 1946.63 ms. Allocated memory was 302.0 MB in the beginning and 466.1 MB in the end (delta: 164.1 MB). Free memory was 260.3 MB in the beginning and 356.7 MB in the end (delta: -96.4 MB). Peak memory consumption was 67.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:55,035 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:30:55,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 249.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:55,036 INFO L168 Benchmark]: Boogie Preprocessor took 31.48 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:55,036 INFO L168 Benchmark]: RCFGBuilder took 351.90 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 224.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:55,036 INFO L168 Benchmark]: TraceAbstraction took 1336.11 ms. Allocated memory was 302.0 MB in the beginning and 466.1 MB in the end (delta: 164.1 MB). Free memory was 223.7 MB in the beginning and 356.7 MB in the end (delta: -133.1 MB). Peak memory consumption was 31.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:55,038 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 249.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.48 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 351.90 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 224.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1336.11 ms. Allocated memory was 302.0 MB in the beginning and 466.1 MB in the end (delta: 164.1 MB). Free memory was 223.7 MB in the beginning and 356.7 MB in the end (delta: -133.1 MB). Peak memory consumption was 31.0 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) - 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 6 procedures, 75 locations, 6 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=75occurred 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 - 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: cstrlenErr0EnsuresViolation CFG has 6 procedures, 75 locations, 6 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 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=75occurred 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, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L579] int length1 = __VERIFIER_nondet_int(); [L580] int length2 = __VERIFIER_nondet_int(); [L581] COND TRUE length1 < 1 [L582] length1 = 1 VAL [length1=1, length2=0] [L584] COND TRUE length2 < 1 [L585] length2 = 1 VAL [length1=1, length2=1] [L587] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, length1=1, length2=1] [L587] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, length1=1, length2=1, nondetString1={1:0}] [L588] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, __builtin_alloca (length2 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={1:0}] [L588] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, __builtin_alloca (length2 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={1:0}, nondetString2={3:0}] [L589] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, __builtin_alloca (length2 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={1:0}, nondetString2={3:0}] [L590] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, __builtin_alloca (length2 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={1:0}, nondetString2={3:0}] [L591] CALL, EXPR cstrstr(nondetString1,nondetString2) VAL [find={3:0}, s={1:0}] [L564] char c, sc; [L565] size_t len; [L566] EXPR find++ VAL [find={3:1}, find={3:0}, find++=0, find++={3:0}, s={1:0}, s={1:0}] [L566] EXPR c = *find++ VAL [c=0, find={3:0}, find={3:1}, find++={3:0}, find++=0, s={1:0}, s={1:0}] [L566] COND FALSE !((c = *find++) != 0) [L576] RET return ((char *)s); VAL [\result={1:0}, c=0, find={3:0}, find={3:1}, s={1:0}, s={1:0}] [L591] EXPR cstrstr(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={1:0}, __builtin_alloca (length2 * sizeof(char))={3:0}, cstrstr(nondetString1,nondetString2)={1:0}, length1=1, length2=1, nondetString1={1:0}, nondetString2={3:0}] [L591] return cstrstr(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 6 procedures, 75 locations, 6 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 30 NumberOfCodeBlocks, 30 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 - PositiveResult [Line: 578]: 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 6 procedures, 75 locations, 6 error locations. SAFE Result, 0.6s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 52 SDslu, 26 SDs, 0 SdLazy, 231 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 5157 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: 548]: 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: cstrncmpErr0EnsuresViolation CFG has 6 procedures, 75 locations, 6 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 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=75occurred 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, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 961 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: 561]: 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: cstrstrErr0EnsuresViolation CFG has 6 procedures, 75 locations, 6 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_00-30-55-045.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_00-30-55-045.csv Received shutdown request...