java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:36:24,821 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:24,823 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:24,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:24,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:24,840 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:24,841 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:24,842 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:24,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:24,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:24,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:24,846 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:24,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:24,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:24,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:24,852 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:24,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:24,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:24,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:24,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:24,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:36:24,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:36:24,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:36:24,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:36:24,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:24,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:24,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:24,881 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:24,881 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:24,881 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:24,881 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:24,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:24,882 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:24,883 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:24,883 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:24,883 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:24,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:24,884 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:24,884 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:24,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:24,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:24,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:24,885 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:24,885 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:24,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:24,885 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:24,886 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:24,886 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:24,886 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:24,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:24,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:24,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:24,887 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:24,887 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:24,887 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:24,887 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:24,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:24,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:24,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:24,888 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:24,888 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:24,889 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:24,890 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:24,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:24,946 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:24,950 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:24,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:24,952 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:24,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:25,172 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:25,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:25,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:25,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:25,186 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:25,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22535488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25, skipping insertion in model container [2018-01-21 05:36:25,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,210 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:25,253 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:25,381 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:25,398 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:25,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25 WrapperNode [2018-01-21 05:36:25,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:25,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:25,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:25,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:25,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... [2018-01-21 05:36:25,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:25,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:25,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:25,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:25,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:25,488 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:25,488 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:25,488 INFO L136 BoogieDeclarations]: Found implementation of procedure subseq [2018-01-21 05:36:25,489 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure subseq [2018-01-21 05:36:25,489 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:25,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:25,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:25,688 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:25,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:25 BoogieIcfgContainer [2018-01-21 05:36:25,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:25,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:25,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:25,691 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:25,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:25" (1/3) ... [2018-01-21 05:36:25,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c9e606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:25, skipping insertion in model container [2018-01-21 05:36:25,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:25" (2/3) ... [2018-01-21 05:36:25,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c9e606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:25, skipping insertion in model container [2018-01-21 05:36:25,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:25" (3/3) ... [2018-01-21 05:36:25,694 INFO L105 eAbstractionObserver]: Analyzing ICFG subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:25,702 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:25,709 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:25,761 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:25,761 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:25,762 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:25,762 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:25,762 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:25,762 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:25,762 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:25,763 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:25,764 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-21 05:36:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:25,793 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:25,794 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:25,794 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:25,800 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-21 05:36:25,803 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:25,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:25,864 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:25,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:25,865 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:25,931 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:25,938 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:25,944 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:25,944 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:25,944 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:25,944 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:25,944 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:25,944 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:25,944 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:25,944 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == subseqErr0EnsuresViolation======== [2018-01-21 05:36:25,944 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-21 05:36:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:36:25,947 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:25,947 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] [2018-01-21 05:36:25,947 INFO L371 AbstractCegarLoop]: === Iteration 1 === [subseqErr0EnsuresViolation]=== [2018-01-21 05:36:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash 52339367, now seen corresponding path program 1 times [2018-01-21 05:36:25,948 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:25,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:25,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:25,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:25,949 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:25,984 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:36:26,032 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:26,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:26,032 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:26,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:26,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:26,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,048 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-21 05:36:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:26,141 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-21 05:36:26,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:26,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 05:36:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:26,150 INFO L225 Difference]: With dead ends: 59 [2018-01-21 05:36:26,150 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:26,154 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:26,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 05:36:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:26,175 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:26,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:26,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:26,178 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:26,178 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:26,178 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:26,178 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:26,178 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:26,178 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:26,178 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:26,179 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:26,179 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-21 05:36:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 05:36:26,182 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:26,183 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] [2018-01-21 05:36:26,183 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:26,183 INFO L82 PathProgramCache]: Analyzing trace with hash -138026163, now seen corresponding path program 1 times [2018-01-21 05:36:26,183 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:26,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:26,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,185 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:26,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:36:26,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:26,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:26,244 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:26,245 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:26,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:26,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,245 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-21 05:36:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:26,249 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-21 05:36:26,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:26,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-21 05:36:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:26,252 INFO L225 Difference]: With dead ends: 59 [2018-01-21 05:36:26,253 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 05:36:26,253 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 05:36:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-21 05:36:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-21 05:36:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-01-21 05:36:26,264 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2018-01-21 05:36:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:26,265 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-01-21 05:36:26,265 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-01-21 05:36:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 05:36:26,266 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:26,267 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, 1] [2018-01-21 05:36:26,267 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1839552329, now seen corresponding path program 1 times [2018-01-21 05:36:26,267 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:26,269 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,269 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:26,269 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,269 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:26,339 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:26,350 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:26,355 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:26,357 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:26,358 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:26,375 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:26,375 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:26,376 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:26,376 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:26,376 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:26,376 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:26,376 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:26,376 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:36:26,376 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-21 05:36:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:36:26,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:26,380 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] [2018-01-21 05:36:26,380 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:26,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2100699955, now seen corresponding path program 1 times [2018-01-21 05:36:26,381 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:26,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:26,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,382 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:26,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:36:26,412 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:26,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:26,413 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:26,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:26,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:26,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,414 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-21 05:36:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:26,419 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-21 05:36:26,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:26,419 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-21 05:36:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:26,420 INFO L225 Difference]: With dead ends: 59 [2018-01-21 05:36:26,420 INFO L226 Difference]: Without dead ends: 38 [2018-01-21 05:36:26,421 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-21 05:36:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-21 05:36:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 05:36:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-21 05:36:26,428 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2018-01-21 05:36:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:26,428 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-21 05:36:26,428 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-21 05:36:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 05:36:26,430 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:26,430 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] [2018-01-21 05:36:26,430 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1875178679, now seen corresponding path program 1 times [2018-01-21 05:36:26,431 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:26,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,432 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:26,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:26,432 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:26,455 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:36:26,748 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:26,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 05:36:26,749 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:26,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 05:36:26,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 05:36:26,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-21 05:36:26,750 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2018-01-21 05:36:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:26,987 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-01-21 05:36:26,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 05:36:26,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-21 05:36:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:26,989 INFO L225 Difference]: With dead ends: 38 [2018-01-21 05:36:26,989 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:26,990 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-21 05:36:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:26,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-01-21 05:36:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:26,992 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:26,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 05:36:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:26,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:26,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:36:26 BoogieIcfgContainer [2018-01-21 05:36:26,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:36:26,997 INFO L168 Benchmark]: Toolchain (without parser) took 1824.86 ms. Allocated memory was 301.5 MB in the beginning and 458.2 MB in the end (delta: 156.8 MB). Free memory was 259.8 MB in the beginning and 362.3 MB in the end (delta: -102.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:26,998 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 301.5 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:26,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.03 ms. Allocated memory is still 301.5 MB. Free memory was 258.8 MB in the beginning and 248.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:26,999 INFO L168 Benchmark]: Boogie Preprocessor took 32.61 ms. Allocated memory is still 301.5 MB. Free memory was 248.8 MB in the beginning and 246.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:27,000 INFO L168 Benchmark]: RCFGBuilder took 249.32 ms. Allocated memory is still 301.5 MB. Free memory was 246.8 MB in the beginning and 230.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:27,000 INFO L168 Benchmark]: TraceAbstraction took 1307.28 ms. Allocated memory was 301.5 MB in the beginning and 458.2 MB in the end (delta: 156.8 MB). Free memory was 230.2 MB in the beginning and 362.3 MB in the end (delta: -132.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:27,002 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 301.5 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 228.03 ms. Allocated memory is still 301.5 MB. Free memory was 258.8 MB in the beginning and 248.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.61 ms. Allocated memory is still 301.5 MB. Free memory was 248.8 MB in the beginning and 246.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 249.32 ms. Allocated memory is still 301.5 MB. Free memory was 246.8 MB in the beginning and 230.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1307.28 ms. Allocated memory was 301.5 MB in the beginning and 458.2 MB in the end (delta: 156.8 MB). Free memory was 230.2 MB in the beginning and 362.3 MB in the end (delta: -132.1 MB). Peak memory consumption was 24.6 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) - 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, 44 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=44occurred 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: subseqErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 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=44occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 VAL [length1=1, length2=0] [L559] COND TRUE length2 < 1 [L560] length2 = 1 VAL [length1=1, length2=1] [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}] [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L564] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L565] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L566] CALL, EXPR subseq(nondetString1,nondetString2) VAL [s={3:0}, t={5:0}] [L542] char *ps = s; [L543] char *pt = t; VAL [ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] EXPR, FCALL \read(*ps) VAL [\read(*ps)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] *ps != '\0' && *pt != '\0' VAL [*ps != '\0' && *pt != '\0'=0, \read(*ps)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] COND FALSE !(*ps != '\0' && *pt != '\0') [L550] EXPR, FCALL \read(*pt) VAL [\read(*pt)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L550] COND TRUE *pt == '\0' [L550] RET return 1; VAL [\result=1, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L566] EXPR subseq(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}, subseq(nondetString1,nondetString2)=1] [L566] return subseq(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 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=44occurred 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, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 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: 553]: 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, 44 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 22 SDslu, 26 SDs, 0 SdLazy, 109 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 6286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-36-27-014.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-36-27-014.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-36-27-014.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-36-27-014.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-36-27-014.csv Received shutdown request...