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_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:27:50,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:27:50,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:27:50,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:27:50,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:27:50,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:27:50,485 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:27:50,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:27:50,488 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:27:50,489 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:27:50,489 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:27:50,490 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:27:50,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:27:50,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:27:50,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:27:50,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:27:50,497 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:27:50,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:27:50,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:27:50,501 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:27:50,504 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:27:50,504 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:27:50,504 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:27:50,505 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:27:50,506 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:27:50,507 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:27:50,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:27:50,508 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:27:50,508 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:27:50,509 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:27:50,509 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:27:50,510 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_mostprecise.epf [2018-01-24 20:27:50,519 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:27:50,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:27:50,521 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:27:50,521 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:27:50,521 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:27:50,521 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:27:50,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:27:50,522 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:27:50,522 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:27:50,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:27:50,523 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:27:50,523 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:27:50,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:27:50,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:27:50,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:27:50,525 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:27:50,525 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:27:50,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:27:50,525 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:27:50,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:27:50,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:27:50,526 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:27:50,526 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:27:50,526 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:27:50,526 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:27:50,527 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:27:50,527 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:27:50,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:27:50,527 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:27:50,527 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:27:50,528 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:27:50,528 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:27:50,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:27:50,575 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:27:50,580 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:27:50,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:27:50,582 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:27:50,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-free.i [2018-01-24 20:27:50,735 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:27:50,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:27:50,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:27:50,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:27:50,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:27:50,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4d08b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50, skipping insertion in model container [2018-01-24 20:27:50,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,766 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:27:50,804 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:27:50,915 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:27:50,929 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:27:50,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50 WrapperNode [2018-01-24 20:27:50,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:27:50,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:27:50,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:27:50,939 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:27:50,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (1/1) ... [2018-01-24 20:27:50,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:27:50,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:27:50,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:27:50,977 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:27:50,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (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 [2018-01-24 20:27:51,036 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:27:51,037 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:27:51,037 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:27:51,037 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:27:51,037 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:27:51,037 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:27:51,037 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:27:51,038 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:27:51,039 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:27:51,039 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:27:51,261 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:27:51,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:27:51 BoogieIcfgContainer [2018-01-24 20:27:51,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:27:51,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:27:51,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:27:51,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:27:51,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:27:50" (1/3) ... [2018-01-24 20:27:51,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a013291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:27:51, skipping insertion in model container [2018-01-24 20:27:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:27:50" (2/3) ... [2018-01-24 20:27:51,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a013291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:27:51, skipping insertion in model container [2018-01-24 20:27:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:27:51" (3/3) ... [2018-01-24 20:27:51,268 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-free.i [2018-01-24 20:27:51,275 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:27:51,281 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 20:27:51,327 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:27:51,328 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:27:51,328 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:27:51,328 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:27:51,328 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:27:51,328 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:27:51,328 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:27:51,329 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:27:51,329 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:27:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 20:27:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:27:51,357 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:51,358 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:51,358 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020876, now seen corresponding path program 1 times [2018-01-24 20:27:51,366 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:51,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:51,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,415 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:27:51,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:27:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:27:51,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:27:51,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:27:51,563 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:27:51,565 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:27:51,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:27:51,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:27:51,578 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 20:27:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:27:51,734 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-01-24 20:27:51,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:27:51,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-24 20:27:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:27:51,750 INFO L225 Difference]: With dead ends: 46 [2018-01-24 20:27:51,750 INFO L226 Difference]: Without dead ends: 36 [2018-01-24 20:27:51,754 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:27:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-24 20:27:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-24 20:27:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-24 20:27:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-01-24 20:27:51,793 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2018-01-24 20:27:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:27:51,794 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-01-24 20:27:51,794 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:27:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-01-24 20:27:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:27:51,795 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:51,795 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:51,795 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020877, now seen corresponding path program 1 times [2018-01-24 20:27:51,795 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:51,796 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,797 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:51,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,797 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:27:51,816 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:27:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:27:51,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:27:51,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:27:51,907 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:27:51,908 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:27:51,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:27:51,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:27:51,909 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 4 states. [2018-01-24 20:27:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:27:51,984 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-24 20:27:51,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:27:51,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:27:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:27:51,985 INFO L225 Difference]: With dead ends: 36 [2018-01-24 20:27:51,985 INFO L226 Difference]: Without dead ends: 29 [2018-01-24 20:27:51,986 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:27:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-24 20:27:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-24 20:27:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-24 20:27:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-01-24 20:27:51,991 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 8 [2018-01-24 20:27:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:27:51,991 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-01-24 20:27:51,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:27:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-01-24 20:27:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:27:51,992 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:51,992 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:51,993 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash -151822659, now seen corresponding path program 1 times [2018-01-24 20:27:51,993 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:51,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,994 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:51,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:51,995 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:27:52,016 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:27:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:27:52,124 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:27:52,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:27:52,125 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:27:52,125 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:27:52,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:27:52,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:27:52,126 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2018-01-24 20:27:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:27:52,168 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-01-24 20:27:52,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:27:52,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 20:27:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:27:52,169 INFO L225 Difference]: With dead ends: 29 [2018-01-24 20:27:52,170 INFO L226 Difference]: Without dead ends: 28 [2018-01-24 20:27:52,170 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:27:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-24 20:27:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-24 20:27:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 20:27:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-01-24 20:27:52,174 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-01-24 20:27:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:27:52,174 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-01-24 20:27:52,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:27:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-01-24 20:27:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 20:27:52,175 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:52,176 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:52,176 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:52,176 INFO L82 PathProgramCache]: Analyzing trace with hash -151822658, now seen corresponding path program 1 times [2018-01-24 20:27:52,176 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:52,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,177 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:52,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,178 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:27:52,195 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:27:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:27:52,272 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:27:52,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:27:52,273 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:27:52,273 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:27:52,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:27:52,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:27:52,274 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2018-01-24 20:27:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:27:52,368 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-01-24 20:27:52,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:27:52,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 20:27:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:27:52,369 INFO L225 Difference]: With dead ends: 28 [2018-01-24 20:27:52,369 INFO L226 Difference]: Without dead ends: 27 [2018-01-24 20:27:52,370 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:27:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-24 20:27:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-01-24 20:27:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-24 20:27:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-01-24 20:27:52,373 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2018-01-24 20:27:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:27:52,374 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-01-24 20:27:52,374 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:27:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-01-24 20:27:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:27:52,375 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:52,375 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:52,375 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:52,375 INFO L82 PathProgramCache]: Analyzing trace with hash 127313054, now seen corresponding path program 1 times [2018-01-24 20:27:52,375 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:52,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,376 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:52,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,377 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:27:52,391 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:27:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:27:52,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:27:52,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:27:52,464 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:27:52,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:27:52,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:27:52,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:27:52,465 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-01-24 20:27:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:27:52,540 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-01-24 20:27:52,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:27:52,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-24 20:27:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:27:52,541 INFO L225 Difference]: With dead ends: 27 [2018-01-24 20:27:52,541 INFO L226 Difference]: Without dead ends: 26 [2018-01-24 20:27:52,542 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:27:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-24 20:27:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-24 20:27:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-24 20:27:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-01-24 20:27:52,545 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2018-01-24 20:27:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:27:52,545 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-01-24 20:27:52,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:27:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-01-24 20:27:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:27:52,546 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:27:52,546 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:27:52,546 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:27:52,546 INFO L82 PathProgramCache]: Analyzing trace with hash 127313055, now seen corresponding path program 1 times [2018-01-24 20:27:52,546 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:27:52,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:27:52,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:27:52,548 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:27:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:27:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:27:52,605 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 20:27:52,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 08:27:52 BoogieIcfgContainer [2018-01-24 20:27:52,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 20:27:52,635 INFO L168 Benchmark]: Toolchain (without parser) took 1900.04 ms. Allocated memory was 303.0 MB in the beginning and 459.8 MB in the end (delta: 156.8 MB). Free memory was 260.9 MB in the beginning and 351.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 66.5 MB. Max. memory is 5.3 GB. [2018-01-24 20:27:52,636 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 303.0 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:27:52,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.60 ms. Allocated memory is still 303.0 MB. Free memory was 259.9 MB in the beginning and 249.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:27:52,637 INFO L168 Benchmark]: Boogie Preprocessor took 38.20 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 247.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 20:27:52,637 INFO L168 Benchmark]: RCFGBuilder took 285.25 ms. Allocated memory is still 303.0 MB. Free memory was 247.8 MB in the beginning and 229.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 5.3 GB. [2018-01-24 20:27:52,637 INFO L168 Benchmark]: TraceAbstraction took 1371.55 ms. Allocated memory was 303.0 MB in the beginning and 459.8 MB in the end (delta: 156.8 MB). Free memory was 229.8 MB in the beginning and 351.2 MB in the end (delta: -121.5 MB). Peak memory consumption was 35.3 MB. Max. memory is 5.3 GB. [2018-01-24 20:27:52,639 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 303.0 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 198.60 ms. Allocated memory is still 303.0 MB. Free memory was 259.9 MB in the beginning and 249.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.20 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 247.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 285.25 ms. Allocated memory is still 303.0 MB. Free memory was 247.8 MB in the beginning and 229.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1371.55 ms. Allocated memory was 303.0 MB in the beginning and 459.8 MB in the end (delta: 156.8 MB). Free memory was 229.8 MB in the beginning and 351.2 MB in the end (delta: -121.5 MB). Peak memory consumption was 35.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L622-L629] FCALL union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; VAL [data={42:0}] [L630] EXPR, FCALL malloc(37U) VAL [data={42:0}, malloc(37U)={41:0}] [L630] FCALL data.p0 = malloc(37U) VAL [data={42:0}, malloc(37U)={41:0}] [L631] EXPR, FCALL data.p0 VAL [data={42:0}, data.p0={41:0}, malloc(37U)={41:0}] [L631] void *ptr = data.p0; [L632] COND FALSE !(__VERIFIER_nondet_int()) [L635] FCALL data.str.p2 = 30 VAL [data={42:0}, malloc(37U)={41:0}, ptr={41:0}] [L637] EXPR, FCALL data.str.p2 VAL [data={42:0}, data.str.p2=30, malloc(37U)={41:0}, ptr={41:0}] [L637] COND FALSE !(25 > data.str.p2) [L640] EXPR, FCALL data.p0 VAL [data={42:0}, data.p0={41:0}, malloc(37U)={41:0}, ptr={41:0}] [L640] FCALL free(data.p0) VAL [data={42:0}, data.p0={41:0}, malloc(37U)={41:0}, ptr={41:0}] [L641] FCALL free(ptr) VAL [data={42:0}, malloc(37U)={41:0}, ptr={41:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 19 error locations. UNSAFE Result, 1.3s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 128 SDslu, 108 SDs, 0 SdLazy, 127 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 3744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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-0158_1_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_20-27-52-646.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_20-27-52-646.csv Received shutdown request...