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.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:25:55,720 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:25:55,721 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:25:55,736 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:25:55,736 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:25:55,737 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:25:55,738 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:25:55,740 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:25:55,742 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:25:55,743 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:25:55,744 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:25:55,744 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:25:55,745 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:25:55,746 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:25:55,747 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:25:55,750 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:25:55,752 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:25:55,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:25:55,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:25:55,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:25:55,759 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 23:25:55,759 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 23:25:55,759 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 23:25:55,760 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 23:25:55,761 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 23:25:55,762 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 23:25:55,763 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 23:25:55,763 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 23:25:55,764 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 23:25:55,764 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:25:55,764 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:25:55,765 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.epf [2018-01-20 23:25:55,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:25:55,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:25:55,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:25:55,774 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:25:55,774 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:25:55,774 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:25:55,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:25:55,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:25:55,775 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:25:55,775 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:25:55,775 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:25:55,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:25:55,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:25:55,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:25:55,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:25:55,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:25:55,777 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:25:55,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:25:55,778 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:25:55,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:25:55,779 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:25:55,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:25:55,779 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:25:55,779 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:25:55,780 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:25:55,780 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:25:55,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:25:55,825 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:25:55,828 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:25:55,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:25:55,830 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:25:55,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:25:55,990 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:25:56,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:25:56,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:25:56,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:25:56,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:25:56,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:25:55" (1/1) ... [2018-01-20 23:25:56,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e99cb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56, skipping insertion in model container [2018-01-20 23:25:56,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:25:55" (1/1) ... [2018-01-20 23:25:56,029 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:25:56,066 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:25:56,181 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:25:56,201 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:25:56,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56 WrapperNode [2018-01-20 23:25:56,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:25:56,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:25:56,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:25:56,210 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:25:56,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (1/1) ... [2018-01-20 23:25:56,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:25:56,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:25:56,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:25:56,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:25:56,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (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 [2018-01-20 23:25:56,298 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:25:56,298 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:25:56,298 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-20 23:25:56,298 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:25:56,298 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-20 23:25:56,299 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:25:56,300 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:25:56,300 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:25:56,485 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:25:56,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:25:56 BoogieIcfgContainer [2018-01-20 23:25:56,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:25:56,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:25:56,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:25:56,488 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:25:56,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:25:55" (1/3) ... [2018-01-20 23:25:56,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747902d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:25:56, skipping insertion in model container [2018-01-20 23:25:56,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:25:56" (2/3) ... [2018-01-20 23:25:56,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747902d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:25:56, skipping insertion in model container [2018-01-20 23:25:56,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:25:56" (3/3) ... [2018-01-20 23:25:56,491 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cstrpbrk-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:25:56,497 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:25:56,504 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:25:56,548 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:56,549 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:56,549 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:56,549 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:56,549 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:56,549 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:56,549 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:56,549 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:25:56,550 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:25:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:25:56,573 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:56,574 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:25:56,574 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:25:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 99946, now seen corresponding path program 1 times [2018-01-20 23:25:56,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:56,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,622 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:56,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,622 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:56,673 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:25:56,678 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:56,685 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:56,686 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:56,686 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:56,686 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:56,686 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:56,686 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:56,686 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:56,686 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrpbrkErr0EnsuresViolation======== [2018-01-20 23:25:56,687 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:25:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 23:25:56,689 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:56,689 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:25:56,689 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrpbrkErr0EnsuresViolation]=== [2018-01-20 23:25:56,689 INFO L82 PathProgramCache]: Analyzing trace with hash -833774844, now seen corresponding path program 1 times [2018-01-20 23:25:56,689 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:56,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,691 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:56,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,691 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:56,726 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:56,768 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:56,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:25:56,768 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:56,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:25:56,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:25:56,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:25:56,784 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 23:25:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:56,882 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 23:25:56,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:25:56,884 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-20 23:25:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:56,891 INFO L225 Difference]: With dead ends: 66 [2018-01-20 23:25:56,892 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:25:56,895 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 [2018-01-20 23:25:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:25:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:25:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:25:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:25:56,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-20 23:25:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:56,917 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:25:56,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:25:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:25:56,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:25:56,920 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:56,920 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:56,920 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:56,920 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:56,920 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:56,920 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:56,920 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:56,920 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:25:56,920 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:25:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-20 23:25:56,923 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:56,923 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] [2018-01-20 23:25:56,923 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:56,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1848851441, now seen corresponding path program 1 times [2018-01-20 23:25:56,923 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:56,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,924 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:56,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:56,925 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:56,944 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:56,973 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:56,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:25:56,974 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:56,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:25:56,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:25:56,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:25:56,975 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 23:25:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:56,980 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 23:25:56,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:25:56,981 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-20 23:25:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:56,985 INFO L225 Difference]: With dead ends: 66 [2018-01-20 23:25:56,985 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 23:25:56,985 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 [2018-01-20 23:25:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 23:25:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-20 23:25:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-20 23:25:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-01-20 23:25:56,997 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 28 [2018-01-20 23:25:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:56,997 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-01-20 23:25:56,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:25:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-01-20 23:25:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:25:56,999 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:56,999 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] [2018-01-20 23:25:56,999 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:25:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash -511937495, now seen corresponding path program 1 times [2018-01-20 23:25:57,000 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:57,001 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,001 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:57,001 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,001 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:25:57,067 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:25:57,077 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:57,081 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:57,084 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:57,084 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:25:57,099 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:25:57,099 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:25:57,099 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:25:57,099 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:25:57,099 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:25:57,099 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:25:57,099 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:25:57,100 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:25:57,100 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:25:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:25:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-20 23:25:57,103 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:57,103 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] [2018-01-20 23:25:57,103 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash 293047855, now seen corresponding path program 1 times [2018-01-20 23:25:57,104 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:57,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,104 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:57,105 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,105 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:57,118 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:57,138 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:57,138 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:25:57,138 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:57,139 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:25:57,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:25:57,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:25:57,139 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-01-20 23:25:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:57,145 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2018-01-20 23:25:57,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:25:57,145 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-20 23:25:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:57,146 INFO L225 Difference]: With dead ends: 66 [2018-01-20 23:25:57,146 INFO L226 Difference]: Without dead ends: 36 [2018-01-20 23:25:57,147 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 [2018-01-20 23:25:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-20 23:25:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-20 23:25:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-20 23:25:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-01-20 23:25:57,151 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2018-01-20 23:25:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:57,152 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-01-20 23:25:57,152 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:25:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-01-20 23:25:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:25:57,153 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:57,154 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] [2018-01-20 23:25:57,154 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1448575799, now seen corresponding path program 1 times [2018-01-20 23:25:57,154 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:57,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,155 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:57,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:57,155 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:57,173 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:25:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:25:57,539 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:57,540 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-20 23:25:57,540 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:57,540 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 23:25:57,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 23:25:57,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-20 23:25:57,541 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-01-20 23:25:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:57,779 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-01-20 23:25:57,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-20 23:25:57,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-01-20 23:25:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:57,780 INFO L225 Difference]: With dead ends: 36 [2018-01-20 23:25:57,780 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:25:57,782 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 [2018-01-20 23:25:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:25:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:25:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:25:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:25:57,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 23:25:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:57,783 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:25:57,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 23:25:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:25:57,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:25:57,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:25:57 BoogieIcfgContainer [2018-01-20 23:25:57,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:25:57,788 INFO L168 Benchmark]: Toolchain (without parser) took 1785.22 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 266.6 MB in the beginning and 365.6 MB in the end (delta: -99.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:57,789 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:25:57,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.21 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:57,790 INFO L168 Benchmark]: Boogie Preprocessor took 35.00 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:57,790 INFO L168 Benchmark]: RCFGBuilder took 240.80 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 238.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:57,791 INFO L168 Benchmark]: TraceAbstraction took 1300.55 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 237.0 MB in the beginning and 365.6 MB in the end (delta: -128.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:57,792 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.21 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.00 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 240.80 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 238.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1300.55 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 237.0 MB in the beginning and 365.6 MB in the end (delta: -128.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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={3:1}, s1={3:0}, s1++=0, s1++={3:0}, s2={5:0}, s2={5:0}] [L545] EXPR c = *s1++ VAL [c=0, s1={3:0}, s1={3:1}, 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={3:1}, s1={3:0}, 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, 0.1s 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, 0.6s 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, 0.3s 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.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-25-57-803.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.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-25-57-803.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.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-25-57-803.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.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-25-57-803.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.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-25-57-803.csv Received shutdown request...