java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:08:16,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:08:16,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:08:16,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:08:16,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:08:16,681 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:08:16,682 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:08:16,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:08:16,686 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:08:16,687 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:08:16,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:08:16,688 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:08:16,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:08:16,690 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:08:16,691 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:08:16,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:08:16,696 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:08:16,698 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:08:16,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:08:16,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:08:16,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:08:16,709 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:08:16,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:08:16,719 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:08:16,720 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:08:16,720 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:08:16,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:08:16,721 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:08:16,721 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:08:16,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:08:16,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:08:16,722 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:08:16,722 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:08:16,722 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:08:16,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:08:16,723 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:08:16,724 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:08:16,724 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:08:16,724 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:08:16,724 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:08:16,724 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:08:16,725 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:08:16,725 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:08:16,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:08:16,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:08:16,725 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:08:16,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:08:16,727 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:08:16,727 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:08:16,728 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:08:16,728 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:08:16,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:08:16,775 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:08:16,779 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:08:16,781 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:08:16,781 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:08:16,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:08:16,935 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:08:16,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:08:16,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:08:16,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:08:16,946 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:08:16,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:08:16" (1/1) ... [2018-01-21 10:08:16,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fa6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:16, skipping insertion in model container [2018-01-21 10:08:16,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:08:16" (1/1) ... [2018-01-21 10:08:16,967 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:08:17,007 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:08:17,121 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:08:17,137 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:08:17,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17 WrapperNode [2018-01-21 10:08:17,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:08:17,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:08:17,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:08:17,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:08:17,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... [2018-01-21 10:08:17,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:08:17,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:08:17,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:08:17,177 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:08:17,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:08:17,229 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:08:17,229 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:08:17,229 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-21 10:08:17,229 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:08:17,229 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:08:17,230 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-21 10:08:17,231 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:08:17,231 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:08:17,231 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:08:17,417 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:08:17,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:08:17 BoogieIcfgContainer [2018-01-21 10:08:17,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:08:17,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:08:17,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:08:17,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:08:17,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:08:16" (1/3) ... [2018-01-21 10:08:17,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d867523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:08:17, skipping insertion in model container [2018-01-21 10:08:17,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:08:17" (2/3) ... [2018-01-21 10:08:17,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d867523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:08:17, skipping insertion in model container [2018-01-21 10:08:17,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:08:17" (3/3) ... [2018-01-21 10:08:17,426 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:08:17,435 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:08:17,443 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 10:08:17,487 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:17,488 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:17,488 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:17,488 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:17,488 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:17,488 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:17,488 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:17,488 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:08:17,489 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:08:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:08:17,513 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:17,514 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:08:17,514 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:08:17,519 INFO L82 PathProgramCache]: Analyzing trace with hash 99946, now seen corresponding path program 1 times [2018-01-21 10:08:17,521 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:17,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:17,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,564 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:17,618 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:08:17,624 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:17,631 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:17,631 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:17,631 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:17,631 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:17,632 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:17,632 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:17,632 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:17,632 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrpbrkErr0EnsuresViolation======== [2018-01-21 10:08:17,632 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:08:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 10:08:17,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:17,636 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:08:17,636 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrpbrkErr0EnsuresViolation]=== [2018-01-21 10:08:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash -833774844, now seen corresponding path program 1 times [2018-01-21 10:08:17,636 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:17,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:17,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,637 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:17,674 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:08:17,724 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:17,724 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:08:17,724 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:17,726 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:08:17,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:08:17,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:17,740 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-21 10:08:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:17,830 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-21 10:08:17,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:08:17,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-21 10:08:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:17,839 INFO L225 Difference]: With dead ends: 66 [2018-01-21 10:08:17,839 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:08:17,842 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:08:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:08:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:08:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:08:17,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-21 10:08:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:17,862 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:08:17,862 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:08:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:08:17,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:08:17,865 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:17,866 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:17,866 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:17,866 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:17,866 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:17,866 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:17,866 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:17,866 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:08:17,866 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:08:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 10:08:17,870 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:17,870 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 10:08:17,870 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:08:17,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1848851441, now seen corresponding path program 1 times [2018-01-21 10:08:17,871 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:17,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,872 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:17,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,872 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:17,893 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:08:17,918 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:17,918 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:08:17,918 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:17,919 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:08:17,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:08:17,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:17,919 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-21 10:08:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:17,961 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-21 10:08:17,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:08:17,962 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-21 10:08:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:17,965 INFO L225 Difference]: With dead ends: 66 [2018-01-21 10:08:17,966 INFO L226 Difference]: Without dead ends: 38 [2018-01-21 10:08:17,966 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-21 10:08:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-21 10:08:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 10:08:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-01-21 10:08:17,980 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 28 [2018-01-21 10:08:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:17,980 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-01-21 10:08:17,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:08:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-01-21 10:08:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:08:17,982 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:17,982 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 10:08:17,982 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:08:17,982 INFO L82 PathProgramCache]: Analyzing trace with hash -511937495, now seen corresponding path program 1 times [2018-01-21 10:08:17,983 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:17,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,984 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:17,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:17,984 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:08:18,047 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:08:18,057 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:18,061 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:18,063 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:18,063 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:08:18,076 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:08:18,077 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:08:18,077 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:08:18,077 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:08:18,077 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:08:18,077 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:08:18,077 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:08:18,077 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:08:18,077 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:08:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:08:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 10:08:18,080 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:18,080 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] [2018-01-21 10:08:18,081 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:08:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash 293047855, now seen corresponding path program 1 times [2018-01-21 10:08:18,081 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:18,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:18,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:18,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:18,083 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:18,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:08:18,117 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:18,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:08:18,117 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:18,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:08:18,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:08:18,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:18,118 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-21 10:08:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:18,124 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-21 10:08:18,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:08:18,124 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-21 10:08:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:18,126 INFO L225 Difference]: With dead ends: 66 [2018-01-21 10:08:18,126 INFO L226 Difference]: Without dead ends: 36 [2018-01-21 10:08:18,126 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:08:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-21 10:08:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-21 10:08:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-21 10:08:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-01-21 10:08:18,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2018-01-21 10:08:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:18,133 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-01-21 10:08:18,133 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:08:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-01-21 10:08:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:08:18,134 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:08:18,134 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 10:08:18,135 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 10:08:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1448575799, now seen corresponding path program 1 times [2018-01-21 10:08:18,135 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:08:18,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:18,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:08:18,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:08:18,136 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:08:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:08:18,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:08:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:08:18,542 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:08:18,542 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 10:08:18,542 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:08:18,543 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-21 10:08:18,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-21 10:08:18,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-21 10:08:18,544 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-01-21 10:08:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:08:18,801 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-01-21 10:08:18,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 10:08:18,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-01-21 10:08:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:08:18,802 INFO L225 Difference]: With dead ends: 36 [2018-01-21 10:08:18,802 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:08:18,803 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-21 10:08:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:08:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:08:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:08:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:08:18,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-21 10:08:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:08:18,804 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:08:18,804 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-21 10:08:18,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:08:18,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:08:18,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:08:18 BoogieIcfgContainer [2018-01-21 10:08:18,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:08:18,809 INFO L168 Benchmark]: Toolchain (without parser) took 1873.42 ms. Allocated memory was 304.1 MB in the beginning and 465.6 MB in the end (delta: 161.5 MB). Free memory was 262.4 MB in the beginning and 358.0 MB in the end (delta: -95.6 MB). Peak memory consumption was 65.9 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:18,810 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:08:18,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.68 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 251.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:18,811 INFO L168 Benchmark]: Boogie Preprocessor took 31.14 ms. Allocated memory is still 304.1 MB. Free memory was 251.2 MB in the beginning and 250.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 10:08:18,811 INFO L168 Benchmark]: RCFGBuilder took 241.44 ms. Allocated memory is still 304.1 MB. Free memory was 249.2 MB in the beginning and 233.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:18,811 INFO L168 Benchmark]: TraceAbstraction took 1388.57 ms. Allocated memory was 304.1 MB in the beginning and 465.6 MB in the end (delta: 161.5 MB). Free memory was 233.5 MB in the beginning and 358.0 MB in the end (delta: -124.5 MB). Peak memory consumption was 37.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:18,813 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 204.68 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 251.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.14 ms. Allocated memory is still 304.1 MB. Free memory was 251.2 MB in the beginning and 250.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 241.44 ms. Allocated memory is still 304.1 MB. Free memory was 249.2 MB in the beginning and 233.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1388.57 ms. Allocated memory was 304.1 MB in the beginning and 465.6 MB in the end (delta: 161.5 MB). Free memory was 233.5 MB in the beginning and 358.0 MB in the end (delta: -124.5 MB). Peak memory consumption was 37.0 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 4 procedures, 42 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=42occurred 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: cstrpbrkErr0EnsuresViolation CFG has 4 procedures, 42 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 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=42occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 VAL [length1=1, length2=0] [L558] COND TRUE length2 < 1 [L559] length2 = 1 VAL [length1=1, length2=1] [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L562] 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}] [L562] 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}] [L563] 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}] [L564] 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}] [L565] CALL cstrpbrk(nondetString1,nondetString2) VAL [s1={3:0}, s2={5:0}] [L543] const char *scanp; [L544] int c, sc; VAL [s1={3:0}, s1={3:0}, s2={5:0}, s2={5:0}] [L545] EXPR s1++ VAL [s1={3:0}, s1={3:1}, s1++={3:0}, s1++=0, s2={5:0}, s2={5:0}] [L545] EXPR c = *s1++ VAL [c=0, s1={3:1}, s1={3:0}, s1++={3:0}, s1++=0, s2={5:0}, s2={5:0}] [L545] COND FALSE !((c = *s1++) != 0) [L550] RET return (((void *)0)); VAL [\result={0:0}, c=0, s1={3:0}, s1={3:1}, s2={5:0}, s2={5:0}] [L565] cstrpbrk(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, cstrpbrk(nondetString1,nondetString2)={0:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L566] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 42 locations, 4 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 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=42occurred 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, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 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: 552]: 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, 42 locations, 4 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 27 SDslu, 20 SDs, 0 SdLazy, 109 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 6773 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/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-08-18-822.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-08-18-822.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-08-18-822.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-08-18-822.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-08-18-822.csv Received shutdown request...