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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:11:32,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:11:32,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:11:32,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:11:32,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:11:32,562 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:11:32,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:11:32,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:11:32,567 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:11:32,568 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:11:32,569 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:11:32,569 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:11:32,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:11:32,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:11:32,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:11:32,575 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:11:32,577 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:11:32,579 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:11:32,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:11:32,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:11:32,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:11:32,589 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:11:32,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:11:32,590 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_preciseopt.epf [2018-01-21 08:11:32,599 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:11:32,599 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:11:32,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:11:32,600 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:11:32,600 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:11:32,600 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:11:32,600 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:11:32,600 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:11:32,600 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:11:32,601 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:11:32,601 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:11:32,601 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:11:32,601 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:11:32,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:11:32,603 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:11:32,603 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:11:32,603 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:11:32,603 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:11:32,603 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:11:32,604 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:11:32,604 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:11:32,605 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:11:32,605 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:11:32,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:11:32,605 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:11:32,605 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:11:32,606 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:11:32,606 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:11:32,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:11:32,649 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:11:32,652 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:11:32,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:11:32,654 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:11:32,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-01-21 08:11:32,818 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:11:32,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:11:32,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:11:32,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:11:32,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:11:32,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:11:32" (1/1) ... [2018-01-21 08:11:32,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7feccdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:32, skipping insertion in model container [2018-01-21 08:11:32,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:11:32" (1/1) ... [2018-01-21 08:11:32,849 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:11:32,887 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:11:33,004 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:11:33,021 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:11:33,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33 WrapperNode [2018-01-21 08:11:33,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:11:33,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:11:33,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:11:33,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:11:33,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... [2018-01-21 08:11:33,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:11:33,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:11:33,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:11:33,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:11:33,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:11:33,109 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:11:33,110 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:11:33,110 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-21 08:11:33,110 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-21 08:11:33,110 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:11:33,110 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:11:33,111 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:11:33,112 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:11:33,354 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:11:33,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:11:33 BoogieIcfgContainer [2018-01-21 08:11:33,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:11:33,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:11:33,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:11:33,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:11:33,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:11:32" (1/3) ... [2018-01-21 08:11:33,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90a271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:11:33, skipping insertion in model container [2018-01-21 08:11:33,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:11:33" (2/3) ... [2018-01-21 08:11:33,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90a271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:11:33, skipping insertion in model container [2018-01-21 08:11:33,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:11:33" (3/3) ... [2018-01-21 08:11:33,362 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i [2018-01-21 08:11:33,370 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:11:33,376 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 08:11:33,413 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:11:33,413 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:11:33,413 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:11:33,413 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:11:33,414 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:11:33,414 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:11:33,414 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:11:33,414 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == build_nondet_StringErr0EnsuresViolation======== [2018-01-21 08:11:33,415 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:11:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-21 08:11:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 08:11:33,444 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:11:33,446 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:11:33,446 INFO L371 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0EnsuresViolation]=== [2018-01-21 08:11:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash 952495694, now seen corresponding path program 1 times [2018-01-21 08:11:33,454 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:11:33,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:11:33,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,499 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:11:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:11:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:11:33,585 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:11:33,594 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:11:33,596 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:11:33,609 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:11:33,610 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:11:33,610 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:11:33,610 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:11:33,610 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:11:33,610 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:11:33,611 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:11:33,611 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:11:33,611 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:11:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-21 08:11:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:11:33,614 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:11:33,614 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:11:33,614 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:11:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash 114200, now seen corresponding path program 1 times [2018-01-21 08:11:33,615 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:11:33,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,616 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:11:33,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,617 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:11:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:11:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:11:33,628 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:11:33,629 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:11:33,632 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:11:33,632 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:11:33,632 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:11:33,632 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:11:33,633 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:11:33,633 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:11:33,633 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:11:33,633 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrpbrkErr0EnsuresViolation======== [2018-01-21 08:11:33,633 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:11:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-21 08:11:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 08:11:33,637 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:11:33,638 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] [2018-01-21 08:11:33,638 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrpbrkErr0EnsuresViolation]=== [2018-01-21 08:11:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash -729248053, now seen corresponding path program 1 times [2018-01-21 08:11:33,638 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:11:33,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,640 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:11:33,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:33,640 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:11:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:11:33,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:11:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:11:33,849 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:11:33,850 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:11:33,851 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 08:11:33,854 INFO L201 CegarAbsIntRunner]: [0], [3], [7], [8], [9], [10], [11], [14], [16], [25], [26], [28], [72], [74], [76], [81], [82], [83], [84], [85], [87], [88], [89] [2018-01-21 08:11:33,901 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:11:33,901 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:11:36,216 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:11:36,218 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 18 variables. [2018-01-21 08:11:36,226 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:11:44,320 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 61.51% of their original sizes. [2018-01-21 08:11:44,320 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:11:44,559 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:11:44,560 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:11:44,560 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 13 [2018-01-21 08:11:44,560 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:11:44,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-21 08:11:44,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-21 08:11:44,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-21 08:11:44,570 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 11 states. [2018-01-21 08:11:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:11:54,364 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2018-01-21 08:11:54,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 08:11:54,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-01-21 08:11:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:11:54,371 INFO L225 Difference]: With dead ends: 100 [2018-01-21 08:11:54,371 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:11:54,374 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-21 08:11:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:11:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:11:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:11:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:11:54,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-21 08:11:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:11:54,396 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:11:54,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-21 08:11:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:11:54,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:11:54,399 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:11:54,399 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:11:54,399 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:11:54,399 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:11:54,399 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:11:54,399 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:11:54,400 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:11:54,400 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:11:54,400 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:11:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-21 08:11:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-21 08:11:54,404 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:11:54,404 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] [2018-01-21 08:11:54,404 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:11:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1885767685, now seen corresponding path program 1 times [2018-01-21 08:11:54,405 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:11:54,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:54,406 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:11:54,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:11:54,406 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:11:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:11:54,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:11:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:11:54,457 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:11:54,457 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:11:54,457 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-21 08:11:54,458 INFO L201 CegarAbsIntRunner]: [0], [3], [7], [8], [9], [10], [11], [14], [16], [18], [19], [20], [21], [22], [23], [25], [26], [28], [72], [74], [75], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89], [90] [2018-01-21 08:11:54,459 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:11:54,459 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:11:56,226 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:11:56,226 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-01-21 08:11:56,230 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:12:10,113 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 61.51% of their original sizes. [2018-01-21 08:12:10,114 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:12:10,227 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:12:10,227 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:12:10,227 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 13 [2018-01-21 08:12:10,227 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:12:10,228 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-21 08:12:10,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-21 08:12:10,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-21 08:12:10,228 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 11 states. [2018-01-21 08:12:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:12:18,862 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2018-01-21 08:12:18,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 08:12:18,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2018-01-21 08:12:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:12:18,865 INFO L225 Difference]: With dead ends: 100 [2018-01-21 08:12:18,865 INFO L226 Difference]: Without dead ends: 46 [2018-01-21 08:12:18,865 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-21 08:12:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-21 08:12:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-01-21 08:12:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-21 08:12:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-01-21 08:12:18,879 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 39 [2018-01-21 08:12:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:12:18,879 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-01-21 08:12:18,880 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-21 08:12:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-01-21 08:12:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 08:12:18,882 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:12:18,882 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, 1, 1] [2018-01-21 08:12:18,882 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:12:18,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1278608538, now seen corresponding path program 1 times [2018-01-21 08:12:18,883 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:12:18,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:12:18,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:12:18,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:12:18,884 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:12:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:12:18,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:12:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:12:18,936 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:12:18,936 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:12:18,936 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-01-21 08:12:18,937 INFO L201 CegarAbsIntRunner]: [0], [5], [7], [8], [9], [10], [11], [14], [16], [18], [19], [20], [21], [22], [23], [25], [26], [28], [32], [33], [36], [74], [75], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89], [90] [2018-01-21 08:12:18,938 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:12:18,939 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:12:19,124 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:12:19,125 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-01-21 08:12:19,126 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:12:19,786 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 61.51% of their original sizes. [2018-01-21 08:12:19,786 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:12:19,856 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:12:19,856 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:12:19,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 13 [2018-01-21 08:12:19,857 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:12:19,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-21 08:12:19,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-21 08:12:19,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-21 08:12:19,858 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 11 states. [2018-01-21 08:12:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:12:22,686 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-01-21 08:12:22,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 08:12:22,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-01-21 08:12:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:12:22,686 INFO L225 Difference]: With dead ends: 53 [2018-01-21 08:12:22,686 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:12:22,687 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-21 08:12:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:12:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:12:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:12:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:12:22,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-01-21 08:12:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:12:22,688 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:12:22,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-21 08:12:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:12:22,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:12:22,689 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:12:22,689 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:12:22,689 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:12:22,689 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:12:22,689 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:12:22,689 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:12:22,689 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:12:22,689 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:12:22,689 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:12:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-21 08:12:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 08:12:22,691 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:12:22,691 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] [2018-01-21 08:12:22,691 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:12:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1177379984, now seen corresponding path program 1 times [2018-01-21 08:12:22,691 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:12:22,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:12:22,692 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:12:22,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:12:22,692 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:12:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:12:22,704 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:12:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:12:22,736 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:12:22,737 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:12:22,737 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-21 08:12:22,737 INFO L201 CegarAbsIntRunner]: [0], [3], [7], [8], [9], [10], [11], [14], [16], [18], [19], [20], [21], [22], [24], [25], [26], [28], [72], [74], [75], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-01-21 08:12:22,739 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:12:22,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:12:23,636 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:12:23,637 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-01-21 08:12:23,650 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:12:29,443 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 61.51% of their original sizes. [2018-01-21 08:12:29,443 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:12:29,552 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:12:29,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:12:29,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 13 [2018-01-21 08:12:29,553 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:12:29,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-21 08:12:29,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-21 08:12:29,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-21 08:12:29,553 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 11 states. Received shutdown request... [2018-01-21 08:12:31,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 08:12:31,665 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:12:31,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:12:31 BoogieIcfgContainer [2018-01-21 08:12:31,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:12:31,668 INFO L168 Benchmark]: Toolchain (without parser) took 58849.12 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 266.1 MB in the beginning and 1.1 GB in the end (delta: -851.0 MB). Peak memory consumption was 402.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:12:31,668 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 307.8 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:12:31,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.10 ms. Allocated memory is still 307.8 MB. Free memory was 265.1 MB in the beginning and 255.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:12:31,669 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 307.8 MB. Free memory was 255.0 MB in the beginning and 253.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:12:31,669 INFO L168 Benchmark]: RCFGBuilder took 293.00 ms. Allocated memory is still 307.8 MB. Free memory was 253.0 MB in the beginning and 234.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. [2018-01-21 08:12:31,669 INFO L168 Benchmark]: TraceAbstraction took 58311.83 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 234.4 MB in the beginning and 1.1 GB in the end (delta: -882.7 MB). Peak memory consumption was 370.9 MB. Max. memory is 5.3 GB. [2018-01-21 08:12:31,671 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 307.8 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 203.10 ms. Allocated memory is still 307.8 MB. Free memory was 265.1 MB in the beginning and 255.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 307.8 MB. Free memory was 255.0 MB in the beginning and 253.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 293.00 ms. Allocated memory is still 307.8 MB. Free memory was 253.0 MB in the beginning and 234.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 58311.83 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 234.4 MB in the beginning and 1.1 GB in the end (delta: -882.7 MB). Peak memory consumption was 370.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 8 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 82 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 19 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 19 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.159684 RENAME_VARIABLES(MILLISECONDS) : 11.499298 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.062847 PROJECTAWAY(MILLISECONDS) : 0.038363 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.228877 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 11.570189 ADD_EQUALITY(MILLISECONDS) : 0.072753 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.041712 #CONJOIN_DISJUNCTIVE : 26 #RENAME_VARIABLES : 35 #UNFREEZE : 0 #CONJOIN : 47 #PROJECTAWAY : 35 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 35 #ADD_EQUALITY : 35 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 8 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 86 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 19 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 19 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.910580 RENAME_VARIABLES(MILLISECONDS) : 8.325442 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.880697 PROJECTAWAY(MILLISECONDS) : 0.016528 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.046335 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 8.382252 ADD_EQUALITY(MILLISECONDS) : 0.026608 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006896 #CONJOIN_DISJUNCTIVE : 26 #RENAME_VARIABLES : 35 #UNFREEZE : 0 #CONJOIN : 47 #PROJECTAWAY : 37 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 35 #ADD_EQUALITY : 35 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 82 LocStat_NO_SUPPORTING_DISEQUALITIES : 8 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 19 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 19 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.390970 RENAME_VARIABLES(MILLISECONDS) : 1.822038 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.365665 PROJECTAWAY(MILLISECONDS) : 0.013847 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.046383 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.864299 ADD_EQUALITY(MILLISECONDS) : 0.025308 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008952 #CONJOIN_DISJUNCTIVE : 25 #RENAME_VARIABLES : 35 #UNFREEZE : 0 #CONJOIN : 46 #PROJECTAWAY : 37 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 35 #ADD_EQUALITY : 35 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 8 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 86 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 19 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 19 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.697733 RENAME_VARIABLES(MILLISECONDS) : 5.967166 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.670792 PROJECTAWAY(MILLISECONDS) : 0.011269 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.029380 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 6.009339 ADD_EQUALITY(MILLISECONDS) : 0.021070 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008272 #CONJOIN_DISJUNCTIVE : 26 #RENAME_VARIABLES : 35 #UNFREEZE : 0 #CONJOIN : 47 #PROJECTAWAY : 35 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 35 #ADD_EQUALITY : 35 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 * 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, 0.2s 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, 20.7s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 96 SDslu, 32 SDs, 0 SdLazy, 211 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s 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, 2.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.964957934785521 AbsIntWeakeningRatio, 1.3448275862068966 AbsIntAvgWeakeningVarsNumRemoved, 2.1379310344827585 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, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 0/8 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, 28.2s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 11.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 141 SDslu, 38 SDs, 0 SdLazy, 207 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s 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, 1.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9739430797123103 AbsIntWeakeningRatio, 1.2179487179487178 AbsIntAvgWeakeningVarsNumRemoved, 1.5128205128205128 AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 4448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 0/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 564]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 564). Cancelled while BasicCegarLoop was constructing difference of abstraction (51states) and interpolant automaton (currently 8 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (11 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 5 procedures, 51 locations, 5 error locations. TIMEOUT Result, 8.9s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 10 SDslu, 7 SDs, 0 SdLazy, 29 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s 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, 0.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9717716696883362 AbsIntWeakeningRatio, 1.2777777777777777 AbsIntAvgWeakeningVarsNumRemoved, 1.7222222222222223 AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 0/8 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_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-3-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-3-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-12-31-684.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_08-12-31-684.csv Completed graceful shutdown