java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:21:50,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:21:50,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:21:50,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:21:50,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:21:50,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:21:50,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:21:50,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:21:50,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:21:50,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:21:50,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:21:50,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:21:50,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:21:50,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:21:50,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:21:50,113 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:21:50,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:21:50,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:21:50,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:21:50,120 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:21:50,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:21:50,123 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:21:50,123 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:21:50,124 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:21:50,125 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:21:50,126 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:21:50,126 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:21:50,127 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:21:50,127 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:21:50,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:21:50,128 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:21:50,129 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:21:50,139 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:21:50,139 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:21:50,140 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:21:50,140 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:21:50,140 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:21:50,141 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:21:50,141 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:21:50,141 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:21:50,141 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:21:50,142 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:21:50,142 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:21:50,142 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:21:50,143 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:21:50,143 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:21:50,143 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:21:50,143 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:21:50,143 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:21:50,144 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:21:50,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:21:50,144 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:21:50,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:21:50,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:21:50,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:21:50,145 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:21:50,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:21:50,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:21:50,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:21:50,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:21:50,147 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:21:50,147 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:21:50,148 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:21:50,148 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:21:50,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:21:50,195 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:21:50,199 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:21:50,201 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:21:50,201 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:21:50,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-01-25 03:21:50,319 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:21:50,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:21:50,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:21:50,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:21:50,331 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:21:50,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5c1283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50, skipping insertion in model container [2018-01-25 03:21:50,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,349 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:21:50,365 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:21:50,483 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:21:50,503 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:21:50,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50 WrapperNode [2018-01-25 03:21:50,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:21:50,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:21:50,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:21:50,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:21:50,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... [2018-01-25 03:21:50,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:21:50,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:21:50,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:21:50,552 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:21:50,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:21:50,610 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:21:50,610 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:21:50,610 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-01-25 03:21:50,610 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-25 03:21:50,610 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:21:50,611 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-01-25 03:21:50,612 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-25 03:21:50,612 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:21:50,612 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:21:50,612 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:21:50,849 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:21:50,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:21:50 BoogieIcfgContainer [2018-01-25 03:21:50,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:21:50,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:21:50,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:21:50,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:21:50,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:21:50" (1/3) ... [2018-01-25 03:21:50,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8a792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:21:50, skipping insertion in model container [2018-01-25 03:21:50,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:21:50" (2/3) ... [2018-01-25 03:21:50,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8a792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:21:50, skipping insertion in model container [2018-01-25 03:21:50,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:21:50" (3/3) ... [2018-01-25 03:21:50,857 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-01-25 03:21:50,863 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:21:50,869 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-25 03:21:50,907 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:21:50,907 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:21:50,907 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:21:50,908 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:21:50,908 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:21:50,908 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:21:50,908 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:21:50,908 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:21:50,909 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:21:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-01-25 03:21:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 03:21:50,940 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:50,941 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:50,941 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-01-25 03:21:50,950 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:50,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:50,997 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:50,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:50,998 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:51,045 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:51,080 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 03:21:51,082 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:51,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:21:51,083 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:51,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 03:21:51,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 03:21:51,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:21:51,101 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-01-25 03:21:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:51,130 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2018-01-25 03:21:51,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 03:21:51,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-25 03:21:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:51,141 INFO L225 Difference]: With dead ends: 128 [2018-01-25 03:21:51,141 INFO L226 Difference]: Without dead ends: 65 [2018-01-25 03:21:51,144 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:21:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-25 03:21:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-01-25 03:21:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-25 03:21:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-25 03:21:51,180 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-01-25 03:21:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:51,180 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-25 03:21:51,180 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 03:21:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-25 03:21:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:21:51,181 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:51,181 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:51,181 INFO L371 AbstractCegarLoop]: === Iteration 2 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-01-25 03:21:51,182 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:51,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,184 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:51,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,185 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:51,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:51,319 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 03:21:51,320 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:51,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:21:51,320 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:51,321 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:21:51,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:21:51,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:51,322 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-01-25 03:21:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:51,371 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2018-01-25 03:21:51,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:21:51,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-25 03:21:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:51,376 INFO L225 Difference]: With dead ends: 86 [2018-01-25 03:21:51,376 INFO L226 Difference]: Without dead ends: 71 [2018-01-25 03:21:51,377 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-25 03:21:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-01-25 03:21:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-25 03:21:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-25 03:21:51,392 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-01-25 03:21:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:51,393 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-25 03:21:51,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:21:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-25 03:21:51,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:21:51,394 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:51,394 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:51,394 INFO L371 AbstractCegarLoop]: === Iteration 3 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-01-25 03:21:51,394 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:51,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,395 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:51,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,396 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:51,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:51,562 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 03:21:51,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:51,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:21:51,562 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:51,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:21:51,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:21:51,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:21:51,564 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2018-01-25 03:21:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:51,654 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-01-25 03:21:51,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:21:51,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:21:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:51,656 INFO L225 Difference]: With dead ends: 64 [2018-01-25 03:21:51,656 INFO L226 Difference]: Without dead ends: 62 [2018-01-25 03:21:51,656 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:21:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-25 03:21:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-01-25 03:21:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-25 03:21:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-01-25 03:21:51,662 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2018-01-25 03:21:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:51,662 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-01-25 03:21:51,662 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:21:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-01-25 03:21:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:21:51,663 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:51,663 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:21:51,663 INFO L371 AbstractCegarLoop]: === Iteration 4 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061678, now seen corresponding path program 1 times [2018-01-25 03:21:51,663 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:51,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,664 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:51,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:51,664 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:51,675 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:51,798 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 03:21:51,798 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:51,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:21:51,799 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:51,799 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:21:51,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:21:51,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:21:51,799 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 7 states. [2018-01-25 03:21:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:52,117 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2018-01-25 03:21:52,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:21:52,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-01-25 03:21:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:52,121 INFO L225 Difference]: With dead ends: 102 [2018-01-25 03:21:52,121 INFO L226 Difference]: Without dead ends: 101 [2018-01-25 03:21:52,121 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:21:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-25 03:21:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2018-01-25 03:21:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-25 03:21:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2018-01-25 03:21:52,134 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 17 [2018-01-25 03:21:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:52,134 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2018-01-25 03:21:52,134 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:21:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2018-01-25 03:21:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:21:52,135 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:52,135 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 03:21:52,135 INFO L371 AbstractCegarLoop]: === Iteration 5 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1554206377, now seen corresponding path program 1 times [2018-01-25 03:21:52,135 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:52,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:52,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:52,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:52,137 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:21:52,149 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:21:52,175 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 03:21:52,175 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:21:52,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:21:52,175 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:21:52,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:21:52,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:21:52,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:52,176 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 3 states. [2018-01-25 03:21:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:21:52,208 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2018-01-25 03:21:52,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:21:52,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-01-25 03:21:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:21:52,209 INFO L225 Difference]: With dead ends: 84 [2018-01-25 03:21:52,210 INFO L226 Difference]: Without dead ends: 83 [2018-01-25 03:21:52,210 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:21:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-25 03:21:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-01-25 03:21:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-25 03:21:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2018-01-25 03:21:52,220 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 18 [2018-01-25 03:21:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:21:52,221 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2018-01-25 03:21:52,221 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:21:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2018-01-25 03:21:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:21:52,222 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:21:52,222 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 03:21:52,222 INFO L371 AbstractCegarLoop]: === Iteration 6 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-25 03:21:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1554206376, now seen corresponding path program 1 times [2018-01-25 03:21:52,222 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:21:52,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:52,224 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:21:52,224 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:21:52,224 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:21:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 03:21:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 03:21:52,279 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 03:21:52,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 03:21:52 BoogieIcfgContainer [2018-01-25 03:21:52,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 03:21:52,306 INFO L168 Benchmark]: Toolchain (without parser) took 1986.57 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 265.0 MB in the beginning and 353.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 71.6 MB. Max. memory is 5.3 GB. [2018-01-25 03:21:52,307 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 03:21:52,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.03 ms. Allocated memory is still 305.7 MB. Free memory was 264.0 MB in the beginning and 256.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:21:52,308 INFO L168 Benchmark]: Boogie Preprocessor took 38.48 ms. Allocated memory is still 305.7 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:21:52,308 INFO L168 Benchmark]: RCFGBuilder took 297.87 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 234.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. [2018-01-25 03:21:52,308 INFO L168 Benchmark]: TraceAbstraction took 1454.47 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 234.4 MB in the beginning and 353.3 MB in the end (delta: -118.9 MB). Peak memory consumption was 41.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:21:52,310 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 188.03 ms. Allocated memory is still 305.7 MB. Free memory was 264.0 MB in the beginning and 256.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.48 ms. Allocated memory is still 305.7 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 297.87 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 234.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1454.47 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 234.4 MB in the beginning and 353.3 MB in the end (delta: -118.9 MB). Peak memory consumption was 41.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; VAL [b={402:0}] [L33] i = 0 VAL [b={402:0}, i=0] [L33] COND TRUE i < 100 VAL [b={402:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={402:0}] [L21] FCALL int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={405:0}, b={402:0}, b={402:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={405:0}, b={402:0}, b={402:0}, i=0, n=0, size=1] [L23] EXPR, FCALL b[i] VAL [\old(n)=0, \old(size)=1, a={405:0}, b={402:0}, b={402:0}, b[i]=403, i=0, n=0, size=1] [L23] FCALL a[i] = b[i] VAL [\old(n)=0, \old(size)=1, a={405:0}, b={402:0}, b={402:0}, b[i]=403, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 68 locations, 11 error locations. UNSAFE Result, 1.4s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 132 SDslu, 348 SDs, 0 SdLazy, 213 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, 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, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 4050 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/ArraysOfVariableLength2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_03-21-52-319.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_03-21-52-319.csv Received shutdown request...