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_smtcomp.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 05:54:13,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 05:54:13,487 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 05:54:13,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 05:54:13,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 05:54:13,503 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 05:54:13,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 05:54:13,506 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 05:54:13,508 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 05:54:13,509 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 05:54:13,510 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 05:54:13,510 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 05:54:13,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 05:54:13,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 05:54:13,513 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 05:54:13,515 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 05:54:13,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 05:54:13,520 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 05:54:13,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 05:54:13,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 05:54:13,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 05:54:13,525 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 05:54:13,525 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 05:54:13,526 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 05:54:13,527 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 05:54:13,528 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 05:54:13,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 05:54:13,529 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 05:54:13,529 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 05:54:13,529 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 05:54:13,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 05:54:13,530 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_smtcomp.epf [2018-01-25 05:54:13,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 05:54:13,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 05:54:13,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 05:54:13,539 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 05:54:13,539 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 05:54:13,540 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 05:54:13,540 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 05:54:13,540 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 05:54:13,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 05:54:13,540 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 05:54:13,541 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 05:54:13,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 05:54:13,542 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 05:54:13,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 05:54:13,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 05:54:13,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 05:54:13,542 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 05:54:13,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 05:54:13,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 05:54:13,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 05:54:13,543 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 05:54:13,543 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 05:54:13,543 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 05:54:13,544 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 05:54:13,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 05:54:13,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 05:54:13,544 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 05:54:13,544 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 05:54:13,545 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 05:54:13,545 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 05:54:13,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 05:54:13,587 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 05:54:13,590 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 05:54:13,591 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 05:54:13,591 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 05:54:13,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-free.i [2018-01-25 05:54:13,760 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 05:54:13,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 05:54:13,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 05:54:13,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 05:54:13,770 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 05:54:13,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,774 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 25.01 05:54:13, skipping insertion in model container [2018-01-25 05:54:13,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,787 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:54:13,823 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:54:13,935 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:54:13,952 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:54:13,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13 WrapperNode [2018-01-25 05:54:13,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 05:54:13,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 05:54:13,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 05:54:13,964 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 05:54:13,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (1/1) ... [2018-01-25 05:54:13,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 05:54:13,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 05:54:13,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 05:54:13,995 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 05:54:13,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (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 05:54:14,049 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 05:54:14,049 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 05:54:14,049 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 05:54:14,049 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 05:54:14,049 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 05:54:14,049 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 05:54:14,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 05:54:14,051 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 05:54:14,254 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 05:54:14,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:54:14 BoogieIcfgContainer [2018-01-25 05:54:14,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 05:54:14,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 05:54:14,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 05:54:14,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 05:54:14,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 05:54:13" (1/3) ... [2018-01-25 05:54:14,259 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 25.01 05:54:14, skipping insertion in model container [2018-01-25 05:54:14,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:54:13" (2/3) ... [2018-01-25 05:54:14,259 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 25.01 05:54:14, skipping insertion in model container [2018-01-25 05:54:14,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:54:14" (3/3) ... [2018-01-25 05:54:14,261 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-free.i [2018-01-25 05:54:14,267 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 05:54:14,274 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-25 05:54:14,319 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 05:54:14,319 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 05:54:14,319 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 05:54:14,319 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 05:54:14,319 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 05:54:14,319 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 05:54:14,319 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 05:54:14,320 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 05:54:14,320 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 05:54:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-25 05:54:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 05:54:14,343 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:14,343 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:14,344 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:14,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020876, now seen corresponding path program 1 times [2018-01-25 05:54:14,349 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:14,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:14,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,391 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:54:14,440 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:54:14,532 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 05:54:14,535 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:54:14,535 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 05:54:14,535 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:54:14,538 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 05:54:14,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 05:54:14,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 05:54:14,558 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-25 05:54:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:54:14,715 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-01-25 05:54:14,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 05:54:14,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-25 05:54:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:54:14,727 INFO L225 Difference]: With dead ends: 46 [2018-01-25 05:54:14,727 INFO L226 Difference]: Without dead ends: 36 [2018-01-25 05:54:14,731 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 [2018-01-25 05:54:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-25 05:54:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-25 05:54:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-25 05:54:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-01-25 05:54:14,770 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2018-01-25 05:54:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:54:14,770 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-01-25 05:54:14,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 05:54:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-01-25 05:54:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 05:54:14,771 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:14,771 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:14,771 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020877, now seen corresponding path program 1 times [2018-01-25 05:54:14,772 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:14,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:14,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,773 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:54:14,792 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:54:14,873 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 05:54:14,873 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:54:14,873 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:54:14,874 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:54:14,875 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:54:14,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:54:14,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:54:14,876 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 4 states. [2018-01-25 05:54:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:54:14,948 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-25 05:54:14,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:54:14,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 05:54:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:54:14,950 INFO L225 Difference]: With dead ends: 36 [2018-01-25 05:54:14,950 INFO L226 Difference]: Without dead ends: 29 [2018-01-25 05:54:14,951 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 [2018-01-25 05:54:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-25 05:54:14,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-25 05:54:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-25 05:54:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-01-25 05:54:14,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 8 [2018-01-25 05:54:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:54:14,956 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-01-25 05:54:14,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:54:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-01-25 05:54:14,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:54:14,957 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:14,957 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:14,957 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:14,958 INFO L82 PathProgramCache]: Analyzing trace with hash -151822659, now seen corresponding path program 1 times [2018-01-25 05:54:14,958 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:14,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,959 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:14,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:14,959 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:54:14,981 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:54:15,046 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 05:54:15,047 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:54:15,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:54:15,047 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:54:15,047 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:54:15,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:54:15,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:54:15,049 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2018-01-25 05:54:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:54:15,118 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-01-25 05:54:15,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:54:15,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 05:54:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:54:15,121 INFO L225 Difference]: With dead ends: 29 [2018-01-25 05:54:15,121 INFO L226 Difference]: Without dead ends: 28 [2018-01-25 05:54:15,122 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 [2018-01-25 05:54:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-25 05:54:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-25 05:54:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 05:54:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-01-25 05:54:15,126 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-01-25 05:54:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:54:15,127 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-01-25 05:54:15,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:54:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-01-25 05:54:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:54:15,128 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:15,128 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:15,128 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -151822658, now seen corresponding path program 1 times [2018-01-25 05:54:15,129 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:15,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,130 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:15,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,130 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:54:15,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:54:15,220 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 05:54:15,221 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:54:15,221 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:54:15,221 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:54:15,222 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:54:15,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:54:15,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:54:15,222 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2018-01-25 05:54:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:54:15,379 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-01-25 05:54:15,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:54:15,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 05:54:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:54:15,380 INFO L225 Difference]: With dead ends: 28 [2018-01-25 05:54:15,381 INFO L226 Difference]: Without dead ends: 27 [2018-01-25 05:54:15,381 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 [2018-01-25 05:54:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-25 05:54:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-01-25 05:54:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-25 05:54:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-01-25 05:54:15,385 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2018-01-25 05:54:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:54:15,385 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-01-25 05:54:15,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:54:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-01-25 05:54:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 05:54:15,386 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:15,386 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:15,386 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash 127313054, now seen corresponding path program 1 times [2018-01-25 05:54:15,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:15,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,388 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:15,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,388 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:54:15,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:54:15,471 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 05:54:15,471 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:54:15,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 05:54:15,471 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:54:15,472 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 05:54:15,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 05:54:15,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-25 05:54:15,472 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-01-25 05:54:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:54:15,540 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-01-25 05:54:15,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 05:54:15,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-25 05:54:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:54:15,541 INFO L225 Difference]: With dead ends: 27 [2018-01-25 05:54:15,542 INFO L226 Difference]: Without dead ends: 26 [2018-01-25 05:54:15,542 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 [2018-01-25 05:54:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-25 05:54:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-25 05:54:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-25 05:54:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-01-25 05:54:15,547 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2018-01-25 05:54:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:54:15,547 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-01-25 05:54:15,548 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 05:54:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-01-25 05:54:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 05:54:15,549 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:54:15,549 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:54:15,549 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr18EnsuresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 05:54:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash 127313055, now seen corresponding path program 1 times [2018-01-25 05:54:15,550 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:54:15,550 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,551 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:54:15,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:54:15,551 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:54:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 05:54:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 05:54:15,605 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 05:54:15,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 05:54:15 BoogieIcfgContainer [2018-01-25 05:54:15,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 05:54:15,634 INFO L168 Benchmark]: Toolchain (without parser) took 1873.25 ms. Allocated memory was 309.3 MB in the beginning and 471.9 MB in the end (delta: 162.5 MB). Free memory was 269.4 MB in the beginning and 364.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 68.0 MB. Max. memory is 5.3 GB. [2018-01-25 05:54:15,635 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 309.3 MB. Free memory is still 275.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 05:54:15,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.69 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-25 05:54:15,635 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 309.3 MB. Free memory was 258.4 MB in the beginning and 256.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-25 05:54:15,636 INFO L168 Benchmark]: RCFGBuilder took 260.54 ms. Allocated memory is still 309.3 MB. Free memory was 256.3 MB in the beginning and 238.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. [2018-01-25 05:54:15,636 INFO L168 Benchmark]: TraceAbstraction took 1377.48 ms. Allocated memory was 309.3 MB in the beginning and 471.9 MB in the end (delta: 162.5 MB). Free memory was 238.6 MB in the beginning and 364.0 MB in the end (delta: -125.4 MB). Peak memory consumption was 37.2 MB. Max. memory is 5.3 GB. [2018-01-25 05:54:15,637 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 309.3 MB. Free memory is still 275.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 198.69 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.30 ms. Allocated memory is still 309.3 MB. Free memory was 258.4 MB in the beginning and 256.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 260.54 ms. Allocated memory is still 309.3 MB. Free memory was 256.3 MB in the beginning and 238.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1377.48 ms. Allocated memory was 309.3 MB in the beginning and 471.9 MB in the end (delta: 162.5 MB). Free memory was 238.6 MB in the beginning and 364.0 MB in the end (delta: -125.4 MB). Peak memory consumption was 37.2 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, 0.5s 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, 0.2s 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, 0.3s 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_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_05-54-15-646.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_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_05-54-15-646.csv Received shutdown request...