java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:07:27,254 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:07:27,256 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:07:27,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:07:27,269 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:07:27,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:07:27,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:07:27,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:07:27,275 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:07:27,276 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:07:27,277 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:07:27,277 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:07:27,278 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:07:27,279 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:07:27,280 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:07:27,283 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:07:27,285 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:07:27,287 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:07:27,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:07:27,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:07:27,292 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:07:27,293 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:07:27,293 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:07:27,294 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:07:27,295 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:07:27,296 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:07:27,296 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:07:27,297 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:07:27,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:07:27,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:07:27,298 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:07:27,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-25 06:07:27,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:07:27,308 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:07:27,309 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:07:27,309 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:07:27,310 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:07:27,310 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:07:27,310 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:07:27,310 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:07:27,311 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:07:27,311 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:07:27,311 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:07:27,312 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:07:27,313 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:07:27,313 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:07:27,313 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:07:27,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:07:27,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:07:27,314 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:07:27,314 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:07:27,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:07:27,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:07:27,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:07:27,316 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:07:27,316 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:07:27,317 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:07:27,317 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:07:27,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:07:27,365 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:07:27,369 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:07:27,370 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:07:27,371 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:07:27,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-25 06:07:27,593 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:07:27,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:07:27,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:07:27,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:07:27,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:07:27,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c105265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27, skipping insertion in model container [2018-01-25 06:07:27,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,632 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:07:27,718 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:07:27,822 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:07:27,834 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:07:27,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27 WrapperNode [2018-01-25 06:07:27,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:07:27,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:07:27,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:07:27,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:07:27,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (1/1) ... [2018-01-25 06:07:27,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:07:27,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:07:27,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:07:27,872 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:07:27,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (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 06:07:27,924 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:07:27,924 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:07:27,924 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 06:07:27,924 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 06:07:27,925 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:07:27,925 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:07:27,925 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:07:27,925 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:07:27,925 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 06:07:27,925 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:07:27,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:07:28,064 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:07:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:07:28 BoogieIcfgContainer [2018-01-25 06:07:28,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:07:28,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:07:28,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:07:28,068 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:07:28,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:07:27" (1/3) ... [2018-01-25 06:07:28,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf16739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:07:28, skipping insertion in model container [2018-01-25 06:07:28,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:07:27" (2/3) ... [2018-01-25 06:07:28,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf16739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:07:28, skipping insertion in model container [2018-01-25 06:07:28,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:07:28" (3/3) ... [2018-01-25 06:07:28,071 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-25 06:07:28,079 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:07:28,085 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-25 06:07:28,125 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:07:28,125 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:07:28,126 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:07:28,126 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:07:28,126 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:07:28,126 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:07:28,126 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:07:28,126 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:07:28,127 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:07:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-25 06:07:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:07:28,154 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:28,155 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:28,156 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-01-25 06:07:28,163 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:28,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,218 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:28,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,218 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:28,269 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:28,346 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 06:07:28,348 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:07:28,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 06:07:28,349 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:28,352 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 06:07:28,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 06:07:28,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 06:07:28,370 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-25 06:07:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:28,543 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-01-25 06:07:28,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 06:07:28,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-25 06:07:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:28,553 INFO L225 Difference]: With dead ends: 40 [2018-01-25 06:07:28,553 INFO L226 Difference]: Without dead ends: 33 [2018-01-25 06:07:28,556 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:07:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-25 06:07:28,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-01-25 06:07:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 06:07:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-25 06:07:28,589 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-01-25 06:07:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:28,590 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-25 06:07:28,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 06:07:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-25 06:07:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:07:28,591 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:28,591 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 06:07:28,591 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:28,592 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-01-25 06:07:28,592 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:28,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,593 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:28,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,593 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:28,612 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:28,681 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 06:07:28,685 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:07:28,685 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 06:07:28,686 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:28,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:07:28,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:07:28,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:07:28,688 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-01-25 06:07:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:28,727 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-25 06:07:28,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:07:28,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 06:07:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:28,729 INFO L225 Difference]: With dead ends: 39 [2018-01-25 06:07:28,730 INFO L226 Difference]: Without dead ends: 35 [2018-01-25 06:07:28,731 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:07:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-25 06:07:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-01-25 06:07:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-25 06:07:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-25 06:07:28,737 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-01-25 06:07:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:28,737 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-25 06:07:28,738 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:07:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-25 06:07:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 06:07:28,739 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:28,739 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:28,739 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:28,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-01-25 06:07:28,739 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:28,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,741 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:28,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,741 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:28,757 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:07:28,798 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:07:28,798 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:07:28,798 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:28,798 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:07:28,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:07:28,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:07:28,799 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-01-25 06:07:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:28,814 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-01-25 06:07:28,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:07:28,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-25 06:07:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:28,815 INFO L225 Difference]: With dead ends: 30 [2018-01-25 06:07:28,815 INFO L226 Difference]: Without dead ends: 29 [2018-01-25 06:07:28,815 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:07:28,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-25 06:07:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-01-25 06:07:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 06:07:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-25 06:07:28,819 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-01-25 06:07:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:28,820 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-25 06:07:28,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:07:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-25 06:07:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 06:07:28,821 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:28,821 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:28,821 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-01-25 06:07:28,821 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:28,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,823 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:28,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,823 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:28,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:07:28,900 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:07:28,900 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:07:28,900 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:28,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:07:28,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:07:28,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:07:28,901 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-01-25 06:07:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:28,921 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-01-25 06:07:28,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:07:28,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-25 06:07:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:28,922 INFO L225 Difference]: With dead ends: 31 [2018-01-25 06:07:28,922 INFO L226 Difference]: Without dead ends: 30 [2018-01-25 06:07:28,922 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:07:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-25 06:07:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-01-25 06:07:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 06:07:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-25 06:07:28,926 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-01-25 06:07:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:28,926 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-25 06:07:28,927 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:07:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-25 06:07:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:07:28,927 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:28,927 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:28,927 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-01-25 06:07:28,928 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:28,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,929 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:28,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:28,929 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:28,944 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:07:29,006 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:07:29,006 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:07:29,007 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-25 06:07:29,008 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [5], [6], [7], [8], [9], [17], [20], [22], [24], [30], [31], [32], [34], [36], [37], [38], [39] [2018-01-25 06:07:29,049 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:07:29,049 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:07:29,488 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 06:07:29,490 INFO L268 AbstractInterpreter]: Visited 20 different actions 34 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-25 06:07:29,499 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 06:07:29,646 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 75.12% of their original sizes. [2018-01-25 06:07:29,646 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 06:07:29,879 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 06:07:29,880 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:07:29,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2018-01-25 06:07:29,881 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:29,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 06:07:29,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 06:07:29,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-25 06:07:29,882 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2018-01-25 06:07:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:31,407 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-01-25 06:07:31,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 06:07:31,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-01-25 06:07:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:31,408 INFO L225 Difference]: With dead ends: 31 [2018-01-25 06:07:31,408 INFO L226 Difference]: Without dead ends: 30 [2018-01-25 06:07:31,409 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-01-25 06:07:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-25 06:07:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-01-25 06:07:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-25 06:07:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-01-25 06:07:31,415 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2018-01-25 06:07:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:31,415 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-01-25 06:07:31,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 06:07:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-01-25 06:07:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:07:31,416 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:31,416 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:31,417 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash 245416421, now seen corresponding path program 1 times [2018-01-25 06:07:31,417 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:31,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:31,418 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:31,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:31,418 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:31,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:07:31,551 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:07:31,551 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:07:31,551 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-25 06:07:31,551 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [5], [6], [7], [8], [9], [17], [20], [22], [25], [30], [31], [32], [34], [36], [37], [38], [39] [2018-01-25 06:07:31,552 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:07:31,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:07:31,674 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 06:07:31,675 INFO L268 AbstractInterpreter]: Visited 20 different actions 34 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-25 06:07:31,679 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 06:07:31,753 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 72.49% of their original sizes. [2018-01-25 06:07:31,753 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 06:07:31,957 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 06:07:31,958 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:07:31,958 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2018-01-25 06:07:31,958 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:31,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 06:07:31,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 06:07:31,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-01-25 06:07:31,958 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2018-01-25 06:07:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:33,551 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-25 06:07:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 06:07:33,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-25 06:07:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:33,552 INFO L225 Difference]: With dead ends: 27 [2018-01-25 06:07:33,553 INFO L226 Difference]: Without dead ends: 26 [2018-01-25 06:07:33,553 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-01-25 06:07:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-25 06:07:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-01-25 06:07:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-25 06:07:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-01-25 06:07:33,558 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 22 [2018-01-25 06:07:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:33,558 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-01-25 06:07:33,558 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 06:07:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-01-25 06:07:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 06:07:33,559 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:33,560 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:33,560 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:33,560 INFO L82 PathProgramCache]: Analyzing trace with hash -694243740, now seen corresponding path program 1 times [2018-01-25 06:07:33,560 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:33,561 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:33,562 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:33,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:33,562 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:07:33,572 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:07:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:07:33,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:07:33,641 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:07:33,642 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-25 06:07:33,642 INFO L201 CegarAbsIntRunner]: [0], [6], [7], [8], [9], [15], [17], [20], [22], [23], [29], [30], [31], [32], [34], [35], [36], [37], [38], [39] [2018-01-25 06:07:33,643 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:07:33,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:07:33,666 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 06:07:33,666 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 14 variables. [2018-01-25 06:07:33,668 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 06:07:33,696 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 51.67% of their original sizes. [2018-01-25 06:07:33,697 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 06:07:33,763 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 06:07:33,763 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:07:33,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2018-01-25 06:07:33,764 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:07:33,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 06:07:33,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 06:07:33,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:07:33,765 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2018-01-25 06:07:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:07:34,279 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-25 06:07:34,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 06:07:34,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-01-25 06:07:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:07:34,280 INFO L225 Difference]: With dead ends: 39 [2018-01-25 06:07:34,280 INFO L226 Difference]: Without dead ends: 24 [2018-01-25 06:07:34,281 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-01-25 06:07:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-25 06:07:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-25 06:07:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-25 06:07:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-25 06:07:34,288 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 23 [2018-01-25 06:07:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:07:34,288 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-25 06:07:34,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 06:07:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-25 06:07:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 06:07:34,289 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:07:34,290 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:07:34,290 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 06:07:34,290 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-01-25 06:07:34,290 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:07:34,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:34,293 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:07:34,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:07:34,293 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:07:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 06:07:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 06:07:34,348 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 06:07:34,360 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 06:07:34,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 06:07:34 BoogieIcfgContainer [2018-01-25 06:07:34,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 06:07:34,376 INFO L168 Benchmark]: Toolchain (without parser) took 6782.42 ms. Allocated memory was 298.3 MB in the beginning and 611.8 MB in the end (delta: 313.5 MB). Free memory was 255.2 MB in the beginning and 302.0 MB in the end (delta: -46.8 MB). Peak memory consumption was 266.8 MB. Max. memory is 5.3 GB. [2018-01-25 06:07:34,377 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 298.3 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 06:07:34,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.68 ms. Allocated memory is still 298.3 MB. Free memory was 255.2 MB in the beginning and 242.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. [2018-01-25 06:07:34,378 INFO L168 Benchmark]: Boogie Preprocessor took 31.74 ms. Allocated memory is still 298.3 MB. Free memory was 242.9 MB in the beginning and 240.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 06:07:34,378 INFO L168 Benchmark]: RCFGBuilder took 193.43 ms. Allocated memory is still 298.3 MB. Free memory was 240.9 MB in the beginning and 227.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-25 06:07:34,378 INFO L168 Benchmark]: TraceAbstraction took 6309.66 ms. Allocated memory was 298.3 MB in the beginning and 611.8 MB in the end (delta: 313.5 MB). Free memory was 227.0 MB in the beginning and 302.0 MB in the end (delta: -75.0 MB). Peak memory consumption was 238.5 MB. Max. memory is 5.3 GB. [2018-01-25 06:07:34,380 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 298.3 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 238.68 ms. Allocated memory is still 298.3 MB. Free memory was 255.2 MB in the beginning and 242.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.74 ms. Allocated memory is still 298.3 MB. Free memory was 242.9 MB in the beginning and 240.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 193.43 ms. Allocated memory is still 298.3 MB. Free memory was 240.9 MB in the beginning and 227.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6309.66 ms. Allocated memory was 298.3 MB in the beginning and 611.8 MB in the end (delta: 313.5 MB). Free memory was 227.0 MB in the beginning and 302.0 MB in the end (delta: -75.0 MB). Peak memory consumption was 238.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 91 LocStat_NO_SUPPORTING_DISEQUALITIES : 11 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 41 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.273138 RENAME_VARIABLES(MILLISECONDS) : 0.114591 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.224769 PROJECTAWAY(MILLISECONDS) : 0.452385 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.188958 DISJOIN(MILLISECONDS) : 0.608713 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.136092 ADD_EQUALITY(MILLISECONDS) : 0.017630 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011714 #CONJOIN_DISJUNCTIVE : 59 #RENAME_VARIABLES : 118 #UNFREEZE : 0 #CONJOIN : 108 #PROJECTAWAY : 95 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 14 #RENAME_VARIABLES_DISJUNCTIVE : 115 #ADD_EQUALITY : 41 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 88 LocStat_NO_SUPPORTING_DISEQUALITIES : 11 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 41 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.115114 RENAME_VARIABLES(MILLISECONDS) : 0.043800 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.100061 PROJECTAWAY(MILLISECONDS) : 0.191853 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.042751 DISJOIN(MILLISECONDS) : 0.483665 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.056998 ADD_EQUALITY(MILLISECONDS) : 0.016296 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008497 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 118 #UNFREEZE : 0 #CONJOIN : 109 #PROJECTAWAY : 95 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 14 #RENAME_VARIABLES_DISJUNCTIVE : 115 #ADD_EQUALITY : 41 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 6 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 1 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 57 LocStat_NO_SUPPORTING_DISEQUALITIES : 0 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 21 TransStat_MAX_WEQGRAPH_SIZE : 1 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 24 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 22 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.267203 RENAME_VARIABLES(MILLISECONDS) : 0.039819 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.082850 PROJECTAWAY(MILLISECONDS) : 0.011911 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.138192 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.059959 ADD_EQUALITY(MILLISECONDS) : 0.015556 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006846 #CONJOIN_DISJUNCTIVE : 20 #RENAME_VARIABLES : 41 #UNFREEZE : 0 #CONJOIN : 42 #PROJECTAWAY : 42 #ADD_WEAK_EQUALITY : 1 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 40 #ADD_EQUALITY : 24 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 6.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 91 SDslu, 421 SDs, 0 SdLazy, 76 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.8921130952380951 AbsIntWeakeningRatio, 0.90625 AbsIntAvgWeakeningVarsNumRemoved, 2.28125 AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 5027 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 14/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-25_06-07-34-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_06-07-34-393.csv Received shutdown request...