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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:54:31,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:54:31,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:54:31,971 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:54:31,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:54:31,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:54:31,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:54:31,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:54:31,977 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:54:31,978 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:54:31,979 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:54:31,979 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:54:31,980 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:54:31,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:54:31,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:54:31,985 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:54:31,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:54:31,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:54:31,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:54:31,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:54:31,994 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 21:54:31,995 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 21:54:31,995 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 21:54:31,996 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 21:54:31,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 21:54:31,999 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 21:54:31,999 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 21:54:31,999 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 21:54:32,000 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 21:54:32,000 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:54:32,001 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:54:32,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 21:54:32,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:54:32,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:54:32,011 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:54:32,011 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:54:32,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:54:32,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:54:32,011 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:54:32,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:54:32,012 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:54:32,012 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:54:32,012 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:54:32,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:54:32,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:54:32,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:54:32,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:54:32,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:54:32,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:54:32,014 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:54:32,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:54:32,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:54:32,015 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:54:32,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:54:32,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:54:32,016 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:54:32,016 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:54:32,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:54:32,062 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:54:32,065 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:54:32,067 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:54:32,067 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:54:32,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-01-20 21:54:32,241 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:54:32,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:54:32,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:32,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:54:32,253 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:54:32,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726f39e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32, skipping insertion in model container [2018-01-20 21:54:32,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,272 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:32,310 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:32,433 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:32,450 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:32,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32 WrapperNode [2018-01-20 21:54:32,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:32,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:54:32,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:54:32,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:54:32,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (1/1) ... [2018-01-20 21:54:32,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:54:32,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:54:32,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:54:32,493 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:54:32,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (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 21:54:32,546 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:54:32,546 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:54:32,546 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-20 21:54:32,547 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-20 21:54:32,547 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:54:32,547 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:54:32,547 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:54:32,547 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:54:32,547 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-20 21:54:32,548 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-20 21:54:32,549 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:54:32,549 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:54:32,549 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:54:32,770 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:54:32,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:32 BoogieIcfgContainer [2018-01-20 21:54:32,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:54:32,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:54:32,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:54:32,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:54:32,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:54:32" (1/3) ... [2018-01-20 21:54:32,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab08baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:32, skipping insertion in model container [2018-01-20 21:54:32,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:32" (2/3) ... [2018-01-20 21:54:32,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab08baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:32, skipping insertion in model container [2018-01-20 21:54:32,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:32" (3/3) ... [2018-01-20 21:54:32,777 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i [2018-01-20 21:54:32,784 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:54:32,789 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-20 21:54:32,836 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:32,836 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:32,836 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:32,836 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:32,836 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:32,837 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:32,837 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:32,837 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == build_nondet_StringErr0EnsuresViolation======== [2018-01-20 21:54:32,838 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-20 21:54:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-20 21:54:32,866 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:32,867 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:54:32,867 INFO L371 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0EnsuresViolation]=== [2018-01-20 21:54:32,871 INFO L82 PathProgramCache]: Analyzing trace with hash 952495694, now seen corresponding path program 1 times [2018-01-20 21:54:32,873 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:32,873 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:32,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:32,916 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:32,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:33,000 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:33,008 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:33,010 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:33,023 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:33,023 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:33,023 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:33,023 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:33,023 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:33,024 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:33,024 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:33,024 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:54:33,024 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-20 21:54:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:54:33,027 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:33,027 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:54:33,027 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:54:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash 114200, now seen corresponding path program 1 times [2018-01-20 21:54:33,028 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:33,028 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:33,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,030 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,030 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:33,039 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:33,040 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:33,042 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:33,043 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:33,043 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:33,043 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:33,043 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:33,043 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:33,043 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:33,044 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrpbrkErr0EnsuresViolation======== [2018-01-20 21:54:33,044 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-20 21:54:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:54:33,048 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:33,048 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:54:33,048 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrpbrkErr0EnsuresViolation]=== [2018-01-20 21:54:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -729248053, now seen corresponding path program 1 times [2018-01-20 21:54:33,049 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:33,049 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:33,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:33,263 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 21:54:33,264 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 21:54:33,279 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,326 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-20 21:54:33,377 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 21:54:33,378 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2018-01-20 21:54:33,379 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:54:33,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:54:33,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,397 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2018-01-20 21:54:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:33,474 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-01-20 21:54:33,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:54:33,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-20 21:54:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:33,482 INFO L225 Difference]: With dead ends: 59 [2018-01-20 21:54:33,482 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:33,485 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:33,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 21:54:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:33,507 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:33,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:54:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:33,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:33,510 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:33,510 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:33,510 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:33,510 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:33,511 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:33,511 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:33,511 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:33,511 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:54:33,511 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-20 21:54:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-20 21:54:33,515 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:33,515 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 21:54:33,515 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1885767685, now seen corresponding path program 1 times [2018-01-20 21:54:33,516 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:33,516 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:33,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,538 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:33,598 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 21:54:33,598 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 21:54:33,612 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,653 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-20 21:54:33,693 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 21:54:33,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2018-01-20 21:54:33,694 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:54:33,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:54:33,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,695 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2018-01-20 21:54:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:33,729 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-01-20 21:54:33,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:54:33,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-01-20 21:54:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:33,731 INFO L225 Difference]: With dead ends: 59 [2018-01-20 21:54:33,731 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:33,731 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:33,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-01-20 21:54:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:33,732 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:33,733 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:54:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:33,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:33,735 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:33,735 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:33,735 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:33,735 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:33,735 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:33,735 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:33,735 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:33,735 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:54:33,736 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-20 21:54:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-20 21:54:33,739 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:33,739 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 21:54:33,739 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1177379984, now seen corresponding path program 1 times [2018-01-20 21:54:33,739 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:33,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:33,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,741 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:33,798 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 21:54:33,798 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 21:54:33,810 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:33,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-20 21:54:33,876 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 21:54:33,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2018-01-20 21:54:33,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:54:33,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:54:33,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,877 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2018-01-20 21:54:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:33,902 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-01-20 21:54:33,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:54:33,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-01-20 21:54:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:33,903 INFO L225 Difference]: With dead ends: 59 [2018-01-20 21:54:33,903 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:33,904 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:33,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-01-20 21:54:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:33,905 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:33,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:54:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:33,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:33,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:54:33 BoogieIcfgContainer [2018-01-20 21:54:33,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:54:33,907 INFO L168 Benchmark]: Toolchain (without parser) took 1665.63 ms. Allocated memory was 306.2 MB in the beginning and 463.5 MB in the end (delta: 157.3 MB). Free memory was 264.5 MB in the beginning and 373.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 48.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:33,908 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:54:33,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.30 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:33,909 INFO L168 Benchmark]: Boogie Preprocessor took 35.35 ms. Allocated memory is still 306.2 MB. Free memory was 253.4 MB in the beginning and 251.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:33,909 INFO L168 Benchmark]: RCFGBuilder took 277.59 ms. Allocated memory is still 306.2 MB. Free memory was 251.3 MB in the beginning and 233.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:33,909 INFO L168 Benchmark]: TraceAbstraction took 1135.64 ms. Allocated memory was 306.2 MB in the beginning and 463.5 MB in the end (delta: 157.3 MB). Free memory was 232.8 MB in the beginning and 373.2 MB in the end (delta: -140.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:33,910 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.30 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.35 ms. Allocated memory is still 306.2 MB. Free memory was 253.4 MB in the beginning and 251.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 277.59 ms. Allocated memory is still 306.2 MB. Free memory was 251.3 MB in the beginning and 233.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1135.64 ms. Allocated memory was 306.2 MB in the beginning and 463.5 MB in the end (delta: 157.3 MB). Free memory was 232.8 MB in the beginning and 373.2 MB in the end (delta: -140.4 MB). Peak memory consumption was 16.9 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L565] CALL build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L545] EXPR, FCALL malloc(length * sizeof(char)) VAL [length=1, malloc(length * sizeof(char))={3:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L547] return nondetString; VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: build_nondet_StringErr0EnsuresViolation CFG has 5 procedures, 51 locations, 5 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=51occurred 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 5 procedures, 51 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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: 549]: 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 5 procedures, 51 locations, 5 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: 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: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 51 locations, 5 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 564]: 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 5 procedures, 51 locations, 5 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 3240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 8/16 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/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_21-54-33-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_21-54-33-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_21-54-33-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_21-54-33-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_21-54-33-917.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-20_21-54-33-917.csv Received shutdown request...