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_imprecise.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 17:09:54,027 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:09:54,028 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:09:54,043 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:09:54,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:09:54,045 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:09:54,046 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:09:54,064 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:09:54,066 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:09:54,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:09:54,068 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:09:54,068 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:09:54,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:09:54,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:09:54,071 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:09:54,074 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:09:54,076 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:09:54,078 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:09:54,079 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:09:54,080 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:09:54,083 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:09:54,083 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:09:54,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:09:54,084 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:09:54,085 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:09:54,086 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:09:54,086 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:09:54,087 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:09:54,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:09:54,087 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:09:54,088 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:09:54,088 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_imprecise.epf [2018-01-24 17:09:54,096 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:09:54,097 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:09:54,098 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:09:54,098 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:09:54,098 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:09:54,098 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:09:54,098 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:09:54,098 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:09:54,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:09:54,099 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:09:54,100 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:09:54,100 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:09:54,100 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:09:54,100 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:09:54,100 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:09:54,100 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:09:54,101 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:09:54,101 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:09:54,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:09:54,101 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:09:54,101 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:09:54,101 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:09:54,102 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:09:54,103 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:09:54,103 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:09:54,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:09:54,145 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:09:54,148 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:09:54,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:09:54,149 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:09:54,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_false-valid-free.i [2018-01-24 17:09:54,294 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:09:54,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:09:54,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:09:54,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:09:54,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:09:54,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cccfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54, skipping insertion in model container [2018-01-24 17:09:54,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,322 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:09:54,359 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:09:54,472 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:09:54,485 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:09:54,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54 WrapperNode [2018-01-24 17:09:54,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:09:54,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:09:54,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:09:54,496 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:09:54,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (1/1) ... [2018-01-24 17:09:54,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:09:54,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:09:54,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:09:54,537 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:09:54,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (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 17:09:54,602 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:09:54,602 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:09:54,603 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:09:54,603 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 17:09:54,603 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 17:09:54,603 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 17:09:54,603 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 17:09:54,603 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:09:54,604 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:09:54,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:09:54,824 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:09:54,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:09:54 BoogieIcfgContainer [2018-01-24 17:09:54,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:09:54,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:09:54,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:09:54,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:09:54,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:09:54" (1/3) ... [2018-01-24 17:09:54,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a203446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:09:54, skipping insertion in model container [2018-01-24 17:09:54,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:09:54" (2/3) ... [2018-01-24 17:09:54,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a203446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:09:54, skipping insertion in model container [2018-01-24 17:09:54,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:09:54" (3/3) ... [2018-01-24 17:09:54,830 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-free.i [2018-01-24 17:09:54,837 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:09:54,844 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 17:09:54,885 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:09:54,885 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:09:54,886 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:09:54,886 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:09:54,886 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:09:54,886 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:09:54,886 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:09:54,886 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:09:54,887 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:09:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 17:09:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 17:09:54,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:54,910 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:09:54,911 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 17:09:54,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020876, now seen corresponding path program 1 times [2018-01-24 17:09:54,918 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:54,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:54,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:54,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:54,960 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:09:55,009 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:09:55,109 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 17:09:55,112 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:09:55,112 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:09:55,112 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:09:55,115 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:09:55,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:09:55,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:09:55,132 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 17:09:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:09:55,305 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-01-24 17:09:55,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:09:55,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-24 17:09:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:09:55,318 INFO L225 Difference]: With dead ends: 46 [2018-01-24 17:09:55,318 INFO L226 Difference]: Without dead ends: 36 [2018-01-24 17:09:55,322 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 17:09:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-24 17:09:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-24 17:09:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-24 17:09:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-01-24 17:09:55,359 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2018-01-24 17:09:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:09:55,359 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-01-24 17:09:55,359 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:09:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-01-24 17:09:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 17:09:55,360 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:55,360 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:09:55,360 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 17:09:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1472020877, now seen corresponding path program 1 times [2018-01-24 17:09:55,360 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:55,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,361 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:55,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,362 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:09:55,379 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:09:55,465 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 17:09:55,466 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:09:55,466 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:09:55,466 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:09:55,467 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:09:55,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:09:55,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:09:55,468 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 4 states. [2018-01-24 17:09:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:09:55,534 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-24 17:09:55,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:09:55,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 17:09:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:09:55,535 INFO L225 Difference]: With dead ends: 36 [2018-01-24 17:09:55,535 INFO L226 Difference]: Without dead ends: 29 [2018-01-24 17:09:55,536 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 17:09:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-24 17:09:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-24 17:09:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-24 17:09:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-01-24 17:09:55,539 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 8 [2018-01-24 17:09:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:09:55,539 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-01-24 17:09:55,539 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:09:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-01-24 17:09:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 17:09:55,540 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:55,540 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:09:55,540 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 17:09:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -151822659, now seen corresponding path program 1 times [2018-01-24 17:09:55,540 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:55,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,541 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:55,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,541 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:09:55,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:09:55,645 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 17:09:55,646 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:09:55,646 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:09:55,646 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:09:55,646 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:09:55,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:09:55,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:09:55,647 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2018-01-24 17:09:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:09:55,705 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-01-24 17:09:55,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:09:55,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 17:09:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:09:55,707 INFO L225 Difference]: With dead ends: 29 [2018-01-24 17:09:55,707 INFO L226 Difference]: Without dead ends: 28 [2018-01-24 17:09:55,707 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 17:09:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-24 17:09:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-24 17:09:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 17:09:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-01-24 17:09:55,712 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-01-24 17:09:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:09:55,712 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-01-24 17:09:55,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:09:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-01-24 17:09:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 17:09:55,713 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:55,713 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:09:55,714 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 17:09:55,714 INFO L82 PathProgramCache]: Analyzing trace with hash -151822658, now seen corresponding path program 1 times [2018-01-24 17:09:55,714 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:55,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,715 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:55,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,715 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:09:55,728 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:09:55,782 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 17:09:55,783 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:09:55,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:09:55,783 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:09:55,783 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:09:55,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:09:55,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:09:55,784 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2018-01-24 17:09:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:09:55,856 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-01-24 17:09:55,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:09:55,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 17:09:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:09:55,858 INFO L225 Difference]: With dead ends: 28 [2018-01-24 17:09:55,858 INFO L226 Difference]: Without dead ends: 27 [2018-01-24 17:09:55,858 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 17:09:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-24 17:09:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-01-24 17:09:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-24 17:09:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-01-24 17:09:55,864 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2018-01-24 17:09:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:09:55,864 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-01-24 17:09:55,865 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:09:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-01-24 17:09:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:09:55,865 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:55,866 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 17:09:55,866 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 17:09:55,866 INFO L82 PathProgramCache]: Analyzing trace with hash 127313054, now seen corresponding path program 1 times [2018-01-24 17:09:55,866 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:55,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,867 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:55,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:55,868 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:09:55,880 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:09:55,938 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 17:09:55,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:09:55,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:09:55,939 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:09:55,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:09:55,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:09:55,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:09:55,940 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-01-24 17:09:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:09:56,042 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-01-24 17:09:56,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:09:56,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-24 17:09:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:09:56,043 INFO L225 Difference]: With dead ends: 27 [2018-01-24 17:09:56,043 INFO L226 Difference]: Without dead ends: 26 [2018-01-24 17:09:56,044 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 17:09:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-24 17:09:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-24 17:09:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-24 17:09:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-01-24 17:09:56,048 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2018-01-24 17:09:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:09:56,049 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-01-24 17:09:56,049 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:09:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-01-24 17:09:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:09:56,050 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:09:56,050 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 17:09:56,050 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 17:09:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash 127313055, now seen corresponding path program 1 times [2018-01-24 17:09:56,050 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:09:56,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:56,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:09:56,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:09:56,052 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:09:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:09:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:09:56,103 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 17:09:56,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 05:09:56 BoogieIcfgContainer [2018-01-24 17:09:56,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 17:09:56,132 INFO L168 Benchmark]: Toolchain (without parser) took 1836.92 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 267.3 MB in the beginning and 359.4 MB in the end (delta: -92.1 MB). Peak memory consumption was 68.3 MB. Max. memory is 5.3 GB. [2018-01-24 17:09:56,133 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 307.2 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:09:56,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.97 ms. Allocated memory is still 307.2 MB. Free memory was 266.3 MB in the beginning and 256.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:09:56,133 INFO L168 Benchmark]: Boogie Preprocessor took 40.73 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:09:56,133 INFO L168 Benchmark]: RCFGBuilder took 287.95 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 236.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. [2018-01-24 17:09:56,134 INFO L168 Benchmark]: TraceAbstraction took 1306.07 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 236.5 MB in the beginning and 359.4 MB in the end (delta: -122.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 5.3 GB. [2018-01-24 17:09:56,135 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 307.2 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 193.97 ms. Allocated memory is still 307.2 MB. Free memory was 266.3 MB in the beginning and 256.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.73 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 287.95 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 236.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1306.07 ms. Allocated memory was 307.2 MB in the beginning and 467.7 MB in the end (delta: 160.4 MB). Free memory was 236.5 MB in the beginning and 359.4 MB in the end (delta: -122.9 MB). Peak memory consumption was 37.5 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, 1.2s 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_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-09-56-142.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_17-09-56-142.csv Received shutdown request...