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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/test-0019_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 02:56:44,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 02:56:44,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 02:56:44,298 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 02:56:44,299 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 02:56:44,300 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 02:56:44,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 02:56:44,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 02:56:44,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 02:56:44,306 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 02:56:44,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 02:56:44,307 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 02:56:44,308 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 02:56:44,309 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 02:56:44,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 02:56:44,313 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 02:56:44,315 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 02:56:44,317 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 02:56:44,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 02:56:44,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 02:56:44,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 02:56:44,324 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 02:56:44,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 02:56:44,325 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 02:56:44,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 02:56:44,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 02:56:44,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 02:56:44,328 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 02:56:44,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 02:56:44,329 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 02:56:44,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 02:56:44,330 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 02:56:44,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 02:56:44,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 02:56:44,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 02:56:44,342 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 02:56:44,342 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 02:56:44,342 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 02:56:44,342 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 02:56:44,343 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 02:56:44,343 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 02:56:44,343 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 02:56:44,343 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 02:56:44,343 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 02:56:44,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 02:56:44,345 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 02:56:44,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 02:56:44,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 02:56:44,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 02:56:44,345 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 02:56:44,345 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 02:56:44,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 02:56:44,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 02:56:44,346 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 02:56:44,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 02:56:44,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 02:56:44,346 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 02:56:44,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 02:56:44,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 02:56:44,347 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 02:56:44,347 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 02:56:44,348 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 02:56:44,348 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 02:56:44,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 02:56:44,393 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 02:56:44,397 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 02:56:44,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 02:56:44,399 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 02:56:44,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0019_false-valid-memtrack_true-termination.i [2018-01-25 02:56:44,594 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 02:56:44,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 02:56:44,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 02:56:44,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 02:56:44,609 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 02:56:44,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@915507d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44, skipping insertion in model container [2018-01-25 02:56:44,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,649 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 02:56:44,715 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 02:56:44,844 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 02:56:44,886 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 02:56:44,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44 WrapperNode [2018-01-25 02:56:44,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 02:56:44,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 02:56:44,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 02:56:44,908 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 02:56:44,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (1/1) ... [2018-01-25 02:56:44,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 02:56:44,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 02:56:44,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 02:56:44,959 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 02:56:44,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (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 [2018-01-25 02:56:45,010 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 02:56:45,011 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 02:56:45,011 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_data [2018-01-25 02:56:45,011 INFO L136 BoogieDeclarations]: Found implementation of procedure free_data [2018-01-25 02:56:45,011 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 02:56:45,011 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 02:56:45,011 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 02:56:45,011 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 02:56:45,011 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_data [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure free_data [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 02:56:45,012 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 02:56:45,226 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 02:56:45,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 02:56:45 BoogieIcfgContainer [2018-01-25 02:56:45,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 02:56:45,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 02:56:45,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 02:56:45,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 02:56:45,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 02:56:44" (1/3) ... [2018-01-25 02:56:45,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bff4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 02:56:45, skipping insertion in model container [2018-01-25 02:56:45,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:56:44" (2/3) ... [2018-01-25 02:56:45,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bff4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 02:56:45, skipping insertion in model container [2018-01-25 02:56:45,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 02:56:45" (3/3) ... [2018-01-25 02:56:45,979 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0019_false-valid-memtrack_true-termination.i [2018-01-25 02:56:45,986 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 02:56:45,991 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-01-25 02:56:46,038 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 02:56:46,039 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 02:56:46,039 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 02:56:46,039 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 02:56:46,039 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 02:56:46,039 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 02:56:46,039 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 02:56:46,039 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 02:56:46,040 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 02:56:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-01-25 02:56:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-25 02:56:46,070 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:46,071 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:56:46,071 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1048002709, now seen corresponding path program 1 times [2018-01-25 02:56:46,080 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:46,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:46,141 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:46,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:46,141 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:46,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:46,398 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:46,399 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 02:56:46,399 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:46,402 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 02:56:46,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 02:56:46,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:56:46,414 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 5 states. [2018-01-25 02:56:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:46,674 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-01-25 02:56:46,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 02:56:46,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-01-25 02:56:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:46,687 INFO L225 Difference]: With dead ends: 51 [2018-01-25 02:56:46,688 INFO L226 Difference]: Without dead ends: 46 [2018-01-25 02:56:46,691 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 02:56:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-25 02:56:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-01-25 02:56:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-25 02:56:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-01-25 02:56:46,730 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 10 [2018-01-25 02:56:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:46,730 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-01-25 02:56:46,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 02:56:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-01-25 02:56:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-25 02:56:46,731 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:46,731 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:56:46,731 INFO L371 AbstractCegarLoop]: === Iteration 2 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1048002708, now seen corresponding path program 1 times [2018-01-25 02:56:46,731 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:46,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:46,733 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:46,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:46,733 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:46,757 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:46,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:46,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 02:56:46,879 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:46,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 02:56:46,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 02:56:46,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-25 02:56:46,882 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 6 states. [2018-01-25 02:56:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:47,043 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-01-25 02:56:47,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 02:56:47,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-01-25 02:56:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:47,044 INFO L225 Difference]: With dead ends: 46 [2018-01-25 02:56:47,044 INFO L226 Difference]: Without dead ends: 44 [2018-01-25 02:56:47,045 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-25 02:56:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-25 02:56:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-01-25 02:56:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-25 02:56:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-01-25 02:56:47,052 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 10 [2018-01-25 02:56:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:47,053 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-01-25 02:56:47,053 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 02:56:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-01-25 02:56:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 02:56:47,054 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:47,054 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:56:47,054 INFO L371 AbstractCegarLoop]: === Iteration 3 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:47,055 INFO L82 PathProgramCache]: Analyzing trace with hash 500312934, now seen corresponding path program 1 times [2018-01-25 02:56:47,055 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:47,056 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,056 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:47,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:47,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:47,139 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:47,139 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 02:56:47,142 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:47,143 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 02:56:47,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 02:56:47,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 02:56:47,144 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 7 states. [2018-01-25 02:56:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:47,297 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-01-25 02:56:47,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 02:56:47,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-01-25 02:56:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:47,298 INFO L225 Difference]: With dead ends: 53 [2018-01-25 02:56:47,299 INFO L226 Difference]: Without dead ends: 49 [2018-01-25 02:56:47,299 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-25 02:56:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-25 02:56:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2018-01-25 02:56:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-25 02:56:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-01-25 02:56:47,305 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 17 [2018-01-25 02:56:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:47,306 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-01-25 02:56:47,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 02:56:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-01-25 02:56:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 02:56:47,307 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:47,307 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:56:47,307 INFO L371 AbstractCegarLoop]: === Iteration 4 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 500312935, now seen corresponding path program 1 times [2018-01-25 02:56:47,308 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:47,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:47,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,309 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:47,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:47,599 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:47,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 02:56:47,599 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:47,600 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 02:56:47,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 02:56:47,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-25 02:56:47,601 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states. [2018-01-25 02:56:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:47,719 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-01-25 02:56:47,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 02:56:47,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-01-25 02:56:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:47,720 INFO L225 Difference]: With dead ends: 42 [2018-01-25 02:56:47,720 INFO L226 Difference]: Without dead ends: 38 [2018-01-25 02:56:47,720 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-25 02:56:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-25 02:56:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-25 02:56:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-25 02:56:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-01-25 02:56:47,724 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 17 [2018-01-25 02:56:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:47,725 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-01-25 02:56:47,725 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 02:56:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-01-25 02:56:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 02:56:47,725 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:47,725 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] [2018-01-25 02:56:47,726 INFO L371 AbstractCegarLoop]: === Iteration 5 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:47,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1011623589, now seen corresponding path program 1 times [2018-01-25 02:56:47,726 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:47,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:47,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:47,727 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:47,755 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:47,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:47,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 02:56:47,995 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:47,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 02:56:47,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 02:56:47,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-25 02:56:47,996 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 11 states. [2018-01-25 02:56:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:48,247 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-01-25 02:56:48,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 02:56:48,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-25 02:56:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:48,248 INFO L225 Difference]: With dead ends: 38 [2018-01-25 02:56:48,248 INFO L226 Difference]: Without dead ends: 37 [2018-01-25 02:56:48,249 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-01-25 02:56:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-25 02:56:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-25 02:56:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-25 02:56:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-01-25 02:56:48,255 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 22 [2018-01-25 02:56:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:48,255 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-01-25 02:56:48,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 02:56:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-01-25 02:56:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 02:56:48,256 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:48,256 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] [2018-01-25 02:56:48,256 INFO L371 AbstractCegarLoop]: === Iteration 6 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:48,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1011623588, now seen corresponding path program 1 times [2018-01-25 02:56:48,257 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:48,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,258 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:48,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,258 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:48,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:48,497 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:48,497 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 02:56:48,497 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:48,498 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 02:56:48,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 02:56:48,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-25 02:56:48,499 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 11 states. [2018-01-25 02:56:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:48,649 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-01-25 02:56:48,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-25 02:56:48,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-25 02:56:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:48,654 INFO L225 Difference]: With dead ends: 40 [2018-01-25 02:56:48,654 INFO L226 Difference]: Without dead ends: 39 [2018-01-25 02:56:48,654 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-01-25 02:56:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-25 02:56:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-01-25 02:56:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-25 02:56:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-01-25 02:56:48,659 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 22 [2018-01-25 02:56:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:48,659 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-01-25 02:56:48,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 02:56:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-01-25 02:56:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 02:56:48,660 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:48,660 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] [2018-01-25 02:56:48,660 INFO L371 AbstractCegarLoop]: === Iteration 7 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1295560179, now seen corresponding path program 1 times [2018-01-25 02:56:48,660 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:48,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:48,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,661 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:48,675 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:48,725 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:48,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 02:56:48,725 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:48,726 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 02:56:48,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 02:56:48,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 02:56:48,728 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 4 states. [2018-01-25 02:56:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:48,753 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-01-25 02:56:48,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 02:56:48,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-01-25 02:56:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:48,756 INFO L225 Difference]: With dead ends: 39 [2018-01-25 02:56:48,756 INFO L226 Difference]: Without dead ends: 38 [2018-01-25 02:56:48,756 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:56:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-25 02:56:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-25 02:56:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-25 02:56:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-01-25 02:56:48,762 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-01-25 02:56:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:48,762 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-01-25 02:56:48,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 02:56:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-01-25 02:56:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 02:56:48,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:48,764 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] [2018-01-25 02:56:48,764 INFO L371 AbstractCegarLoop]: === Iteration 8 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1295560178, now seen corresponding path program 1 times [2018-01-25 02:56:48,764 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:48,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:48,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:48,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:56:48,782 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:56:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:56:49,208 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:56:49,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-01-25 02:56:49,208 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:56:49,209 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-25 02:56:49,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-25 02:56:49,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-01-25 02:56:49,209 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 16 states. [2018-01-25 02:56:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:56:49,478 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2018-01-25 02:56:49,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-25 02:56:49,479 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-01-25 02:56:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:56:49,480 INFO L225 Difference]: With dead ends: 43 [2018-01-25 02:56:49,480 INFO L226 Difference]: Without dead ends: 30 [2018-01-25 02:56:49,480 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2018-01-25 02:56:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-25 02:56:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-01-25 02:56:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-01-25 02:56:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2018-01-25 02:56:49,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 23 [2018-01-25 02:56:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:56:49,485 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2018-01-25 02:56:49,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-25 02:56:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2018-01-25 02:56:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 02:56:49,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:56:49,487 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] [2018-01-25 02:56:49,487 INFO L371 AbstractCegarLoop]: === Iteration 9 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr0EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr7RequiresViolation, free_dataErr10RequiresViolation, free_dataErr9RequiresViolation, free_dataErr11RequiresViolation, free_dataErr2RequiresViolation, free_dataErr8RequiresViolation, free_dataErr4RequiresViolation, free_dataErr6RequiresViolation, free_dataErr0RequiresViolation, free_dataErr5RequiresViolation]=== [2018-01-25 02:56:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -117517057, now seen corresponding path program 1 times [2018-01-25 02:56:49,487 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:56:49,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:49,488 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:56:49,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:56:49,488 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:56:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 02:56:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 02:56:49,553 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 02:56:49,569 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 02:56:49,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 02:56:49 BoogieIcfgContainer [2018-01-25 02:56:49,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 02:56:49,587 INFO L168 Benchmark]: Toolchain (without parser) took 4991.97 ms. Allocated memory was 305.1 MB in the beginning and 517.5 MB in the end (delta: 212.3 MB). Free memory was 262.4 MB in the beginning and 424.4 MB in the end (delta: -162.0 MB). Peak memory consumption was 50.4 MB. Max. memory is 5.3 GB. [2018-01-25 02:56:49,588 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 305.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 02:56:49,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.46 ms. Allocated memory is still 305.1 MB. Free memory was 262.4 MB in the beginning and 252.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-25 02:56:49,589 INFO L168 Benchmark]: Boogie Preprocessor took 50.10 ms. Allocated memory is still 305.1 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 02:56:49,589 INFO L168 Benchmark]: RCFGBuilder took 1015.15 ms. Allocated memory is still 305.1 MB. Free memory was 250.4 MB in the beginning and 231.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. [2018-01-25 02:56:49,590 INFO L168 Benchmark]: TraceAbstraction took 3612.04 ms. Allocated memory was 305.1 MB in the beginning and 517.5 MB in the end (delta: 212.3 MB). Free memory was 231.9 MB in the beginning and 424.4 MB in the end (delta: -192.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-01-25 02:56:49,591 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 305.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 304.46 ms. Allocated memory is still 305.1 MB. Free memory was 262.4 MB in the beginning and 252.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 50.10 ms. Allocated memory is still 305.1 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 1015.15 ms. Allocated memory is still 305.1 MB. Free memory was 250.4 MB in the beginning and 231.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3612.04 ms. Allocated memory was 305.1 MB in the beginning and 517.5 MB in the end (delta: 212.3 MB). Free memory was 231.9 MB in the beginning and 424.4 MB in the end (delta: -192.6 MB). Peak memory consumption was 19.8 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 639]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 639. Possible FailurePath: [L640] FCALL TData data; VAL [data={26:0}] [L641] CALL alloc_data(&data) VAL [pdata={26:0}] [L625] EXPR, FCALL malloc(16) VAL [malloc(16)={27:0}, pdata={26:0}, pdata={26:0}] [L625] FCALL pdata->lo = malloc(16) VAL [malloc(16)={27:0}, pdata={26:0}, pdata={26:0}] [L626] EXPR, FCALL malloc(24) VAL [malloc(16)={27:0}, malloc(24)={28:0}, pdata={26:0}, pdata={26:0}] [L626] RET, FCALL pdata->hi = malloc(24) VAL [malloc(16)={27:0}, malloc(24)={28:0}, pdata={26:0}, pdata={26:0}] [L641] alloc_data(&data) VAL [data={26:0}] [L642] CALL free_data(&data) VAL [data={26:0}] [L630] EXPR, FCALL data->lo VAL [data={26:0}, data={26:0}, data->lo={27:0}] [L630] void *lo = data->lo; [L631] EXPR, FCALL data->hi VAL [data={26:0}, data={26:0}, data->hi={28:0}, lo={27:0}] [L631] void *hi = data->hi; [L632] COND FALSE !(lo == hi) VAL [data={26:0}, data={26:0}, hi={28:0}, lo={27:0}] [L636] FCALL data->lo = (void *) 0 VAL [data={26:0}, data={26:0}, hi={28:0}, lo={27:0}] [L637] RET, FCALL data->hi = (void *) 0 VAL [data={26:0}, data={26:0}, hi={28:0}, lo={27:0}] [L642] free_data(&data) VAL [data={26:0}] [L643] return 0; VAL [\result=0, data={26:0}] [L643] return 0; VAL [\result=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 17 error locations. UNSAFE Result, 3.5s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 220 SDtfs, 196 SDslu, 666 SDs, 0 SdLazy, 731 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 14783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_02-56-49-599.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_02-56-49-599.csv Received shutdown request...