java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0019_1_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:44:13,607 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:44:13,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:44:13,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:44:13,624 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:44:13,625 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:44:13,627 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:44:13,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:44:13,630 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:44:13,631 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:44:13,632 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:44:13,632 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:44:13,633 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:44:13,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:44:13,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:44:13,638 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:44:13,640 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:44:13,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:44:13,644 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:44:13,645 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:44:13,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 23:44:13,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 23:44:13,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 23:44:13,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 23:44:13,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 23:44:13,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 23:44:13,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 23:44:13,653 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 23:44:13,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 23:44:13,653 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:44:13,654 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:44:13,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:44:13,663 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:44:13,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:44:13,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:44:13,664 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:44:13,664 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:44:13,665 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:44:13,665 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:44:13,665 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:44:13,665 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:44:13,665 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:44:13,666 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:44:13,667 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:44:13,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:44:13,667 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:44:13,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:44:13,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:44:13,667 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:44:13,668 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:44:13,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:44:13,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:44:13,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:44:13,668 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:44:13,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:44:13,669 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:44:13,670 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:44:13,670 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:44:13,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:44:13,715 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:44:13,719 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:44:13,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:44:13,720 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:44:13,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0019_1_true-valid-memsafety_true-termination.i [2018-01-20 23:44:13,904 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:44:13,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:44:13,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:44:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:44:13,914 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:44:13,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:44:13" (1/1) ... [2018-01-20 23:44:13,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f45b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:13, skipping insertion in model container [2018-01-20 23:44:13,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:44:13" (1/1) ... [2018-01-20 23:44:13,932 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:44:13,970 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:44:14,086 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:44:14,104 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:44:14,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14 WrapperNode [2018-01-20 23:44:14,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:44:14,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:44:14,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:44:14,114 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:44:14,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... [2018-01-20 23:44:14,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:44:14,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:44:14,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:44:14,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:44:14,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:44:14,199 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:44:14,199 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:44:14,199 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_data [2018-01-20 23:44:14,199 INFO L136 BoogieDeclarations]: Found implementation of procedure free_data [2018-01-20 23:44:14,199 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 23:44:14,200 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_data [2018-01-20 23:44:14,201 INFO L128 BoogieDeclarations]: Found specification of procedure free_data [2018-01-20 23:44:14,201 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:44:14,201 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:44:14,201 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:44:14,421 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:44:14,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:44:14 BoogieIcfgContainer [2018-01-20 23:44:14,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:44:14,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:44:14,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:44:14,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:44:14,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:44:13" (1/3) ... [2018-01-20 23:44:14,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74db919d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:44:14, skipping insertion in model container [2018-01-20 23:44:14,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:44:14" (2/3) ... [2018-01-20 23:44:14,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74db919d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:44:14, skipping insertion in model container [2018-01-20 23:44:14,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:44:14" (3/3) ... [2018-01-20 23:44:14,429 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0019_1_true-valid-memsafety_true-termination.i [2018-01-20 23:44:14,437 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:44:14,442 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-20 23:44:14,479 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:44:14,479 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:44:14,479 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:44:14,479 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:44:14,479 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:44:14,479 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:44:14,479 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:44:14,480 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:44:14,481 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:44:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-20 23:44:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:44:14,510 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:14,511 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:44:14,511 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:44:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 73774, now seen corresponding path program 1 times [2018-01-20 23:44:14,520 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:14,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:14,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:14,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:14,567 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:44:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:44:14,619 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:44:14,626 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:44:14,632 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:44:14,632 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:44:14,632 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:44:14,632 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:44:14,632 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:44:14,632 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:44:14,632 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:44:14,632 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:44:14,632 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:44:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-20 23:44:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-20 23:44:14,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:14,635 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:44:14,635 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:44:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1287011976, now seen corresponding path program 1 times [2018-01-20 23:44:14,636 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:14,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:14,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:14,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:14,637 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:44:14,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:44:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:44:15,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:44:15,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 23:44:15,104 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:44:15,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:44:15,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:44:15,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:44:15,119 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-20 23:44:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:44:15,304 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-01-20 23:44:15,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 23:44:15,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-01-20 23:44:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:44:15,317 INFO L225 Difference]: With dead ends: 43 [2018-01-20 23:44:15,317 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:44:15,321 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:44:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:44:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:44:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:44:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:44:15,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-01-20 23:44:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:44:15,351 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:44:15,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:44:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:44:15,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:44:15,355 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:44:15,355 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:44:15,355 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:44:15,355 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:44:15,355 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:44:15,356 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:44:15,356 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:44:15,356 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == alloc_dataErr0EnsuresViolation======== [2018-01-20 23:44:15,356 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:44:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-20 23:44:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 23:44:15,359 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:15,359 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:44:15,359 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr0EnsuresViolation]=== [2018-01-20 23:44:15,359 INFO L82 PathProgramCache]: Analyzing trace with hash -414774799, now seen corresponding path program 1 times [2018-01-20 23:44:15,359 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:15,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,361 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:15,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,361 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:44:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:44:15,414 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:44:15,420 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:44:15,423 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:44:15,436 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:44:15,436 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:44:15,436 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:44:15,436 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:44:15,436 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:44:15,436 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:44:15,436 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:44:15,437 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:44:15,437 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:44:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-20 23:44:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-20 23:44:15,440 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:15,440 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:44:15,440 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:44:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1433296036, now seen corresponding path program 1 times [2018-01-20 23:44:15,440 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:15,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,442 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:15,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,442 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:44:15,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:44:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:44:15,578 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:44:15,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 23:44:15,578 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:44:15,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:44:15,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:44:15,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:44:15,579 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2018-01-20 23:44:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:44:15,716 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-01-20 23:44:15,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 23:44:15,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-01-20 23:44:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:44:15,717 INFO L225 Difference]: With dead ends: 43 [2018-01-20 23:44:15,717 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:44:15,717 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:44:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:44:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:44:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:44:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:44:15,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-01-20 23:44:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:44:15,719 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:44:15,719 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:44:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:44:15,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:44:15,721 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:44:15,721 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:44:15,721 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:44:15,721 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:44:15,721 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:44:15,721 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:44:15,722 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:44:15,722 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == free_dataErr0EnsuresViolation======== [2018-01-20 23:44:15,722 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:44:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-20 23:44:15,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-20 23:44:15,725 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:15,725 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:44:15,725 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_dataErr0EnsuresViolation]=== [2018-01-20 23:44:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -179149004, now seen corresponding path program 1 times [2018-01-20 23:44:15,726 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:15,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:15,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,727 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:44:15,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:44:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:44:15,775 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:44:15,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:44:15,775 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:44:15,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:44:15,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:44:15,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:44:15,776 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2018-01-20 23:44:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:44:15,862 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-01-20 23:44:15,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:44:15,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-01-20 23:44:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:44:15,872 INFO L225 Difference]: With dead ends: 45 [2018-01-20 23:44:15,873 INFO L226 Difference]: Without dead ends: 31 [2018-01-20 23:44:15,873 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:44:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-20 23:44:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-01-20 23:44:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-20 23:44:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2018-01-20 23:44:15,887 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 28 [2018-01-20 23:44:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:44:15,887 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2018-01-20 23:44:15,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:44:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2018-01-20 23:44:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:44:15,889 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:44:15,889 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:44:15,889 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_dataErr0EnsuresViolation]=== [2018-01-20 23:44:15,889 INFO L82 PathProgramCache]: Analyzing trace with hash -363472878, now seen corresponding path program 1 times [2018-01-20 23:44:15,889 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:44:15,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:44:15,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:44:15,891 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:44:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:44:15,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:44:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:44:16,029 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:44:16,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 23:44:16,029 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:44:16,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:44:16,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:44:16,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:44:16,031 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand 6 states. [2018-01-20 23:44:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:44:16,158 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-01-20 23:44:16,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 23:44:16,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-20 23:44:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:44:16,159 INFO L225 Difference]: With dead ends: 31 [2018-01-20 23:44:16,159 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:44:16,161 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:44:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:44:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:44:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:44:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:44:16,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 23:44:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:44:16,162 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:44:16,162 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:44:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:44:16,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:44:16,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:44:16 BoogieIcfgContainer [2018-01-20 23:44:16,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:44:16,167 INFO L168 Benchmark]: Toolchain (without parser) took 2262.61 ms. Allocated memory was 306.2 MB in the beginning and 467.1 MB in the end (delta: 161.0 MB). Free memory was 264.5 MB in the beginning and 330.8 MB in the end (delta: -66.3 MB). Peak memory consumption was 94.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:44:16,168 INFO L168 Benchmark]: CDTParser took 0.18 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 23:44:16,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.55 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. [2018-01-20 23:44:16,169 INFO L168 Benchmark]: Boogie Preprocessor took 40.57 ms. Allocated memory is still 306.2 MB. Free memory was 253.2 MB in the beginning and 252.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-20 23:44:16,169 INFO L168 Benchmark]: RCFGBuilder took 267.95 ms. Allocated memory is still 306.2 MB. Free memory was 252.2 MB in the beginning and 234.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:44:16,170 INFO L168 Benchmark]: TraceAbstraction took 1743.12 ms. Allocated memory was 306.2 MB in the beginning and 467.1 MB in the end (delta: 161.0 MB). Free memory was 233.6 MB in the beginning and 330.8 MB in the end (delta: -97.2 MB). Peak memory consumption was 63.8 MB. Max. memory is 5.3 GB. [2018-01-20 23:44:16,172 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 204.55 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.57 ms. Allocated memory is still 306.2 MB. Free memory was 253.2 MB in the beginning and 252.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 267.95 ms. Allocated memory is still 306.2 MB. Free memory was 252.2 MB in the beginning and 234.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1743.12 ms. Allocated memory was 306.2 MB in the beginning and 467.1 MB in the end (delta: 161.0 MB). Free memory was 233.6 MB in the beginning and 330.8 MB in the end (delta: -97.2 MB). Peak memory consumption was 63.8 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: 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, 43 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=43occurred 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: 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, 43 locations, 5 error locations. SAFE Result, 0.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 4 SDslu, 16 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 3774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 623]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L640] FCALL TData data; VAL [data={12:0}] [L641] CALL alloc_data(&data) VAL [pdata={12:0}] [L625] EXPR, FCALL malloc(sizeof(int)) VAL [malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}] [L625] FCALL pdata->lo = (int *)malloc(sizeof(int)) VAL [malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}] [L626] EXPR, FCALL malloc(sizeof(int)) VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}] [L626] FCALL pdata->hi = (int *)malloc(sizeof(int)) VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}] [L627] EXPR, FCALL pdata->lo VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}, pdata->lo={13:0}] [L627] FCALL *(pdata->lo) = 4 VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}, pdata->lo={13:0}] [L628] EXPR, FCALL pdata->hi VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}, pdata->hi={16:0}] [L628] FCALL *(pdata->hi) = 8 VAL [malloc(sizeof(int))={16:0}, malloc(sizeof(int))={13:0}, pdata={12:0}, pdata={12:0}, pdata->hi={16:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr0EnsuresViolation CFG has 5 procedures, 43 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=43occurred 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, 19 NumberOfCodeBlocks, 19 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: 639]: 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, 43 locations, 5 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 4 SDslu, 23 SDs, 0 SdLazy, 35 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 3488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 630]: 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: free_dataErr0EnsuresViolation CFG has 5 procedures, 43 locations, 5 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 6 SDslu, 35 SDs, 0 SdLazy, 49 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 4073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-44-16-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-44-16-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-44-16-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-44-16-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-44-16-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-20_23-44-16-183.csv Received shutdown request...