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/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:32:11,374 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:32:11,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:32:11,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:32:11,392 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:32:11,393 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:32:11,394 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:32:11,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:32:11,397 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:32:11,398 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:32:11,399 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:32:11,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:32:11,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:32:11,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:32:11,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:32:11,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:32:11,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:32:11,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:32:11,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:32:11,411 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:32:11,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:32:11,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:32:11,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:32:11,416 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:32:11,417 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:32:11,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:32:11,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:32:11,419 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:32:11,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:32:11,419 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:32:11,420 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:32:11,420 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 03:32:11,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:32:11,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:32:11,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:32:11,432 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:32:11,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:32:11,433 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:32:11,433 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:32:11,433 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:32:11,433 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:32:11,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:32:11,434 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:32:11,434 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:32:11,435 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:32:11,436 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:32:11,436 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:32:11,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:32:11,436 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:32:11,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:32:11,437 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:32:11,437 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:32:11,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:32:11,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:32:11,437 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:32:11,438 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:32:11,439 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:32:11,440 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:32:11,440 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:32:11,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:32:11,490 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:32:11,495 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:32:11,496 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:32:11,497 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:32:11,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-25 03:32:11,707 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:32:11,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:32:11,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:32:11,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:32:11,720 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:32:11,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d434187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11, skipping insertion in model container [2018-01-25 03:32:11,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,746 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:32:11,797 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:32:11,916 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:32:11,931 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:32:11,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11 WrapperNode [2018-01-25 03:32:11,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:32:11,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:32:11,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:32:11,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:32:11,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (1/1) ... [2018-01-25 03:32:11,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:32:11,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:32:11,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:32:11,973 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:32:11,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (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 03:32:12,026 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:32:12,026 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:32:12,026 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 03:32:12,027 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 03:32:12,027 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:32:12,027 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:32:12,027 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:32:12,027 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:32:12,027 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:32:12,028 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:32:12,029 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:32:12,172 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:32:12,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:32:12 BoogieIcfgContainer [2018-01-25 03:32:12,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:32:12,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:32:12,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:32:12,175 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:32:12,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:32:11" (1/3) ... [2018-01-25 03:32:12,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c56ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:32:12, skipping insertion in model container [2018-01-25 03:32:12,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:32:11" (2/3) ... [2018-01-25 03:32:12,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c56ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:32:12, skipping insertion in model container [2018-01-25 03:32:12,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:32:12" (3/3) ... [2018-01-25 03:32:12,179 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-25 03:32:12,186 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:32:12,192 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-25 03:32:12,238 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:32:12,238 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:32:12,238 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:32:12,238 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:32:12,239 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:32:12,239 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:32:12,239 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:32:12,239 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:32:12,239 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:32:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-25 03:32:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 03:32:12,260 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:12,261 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:32:12,262 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-01-25 03:32:12,271 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:12,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:12,324 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:12,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:12,325 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:12,379 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:12,457 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 03:32:12,459 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:32:12,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:32:12,460 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:12,462 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:32:12,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:32:12,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:32:12,476 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-25 03:32:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:12,734 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-01-25 03:32:12,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:32:12,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-25 03:32:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:12,758 INFO L225 Difference]: With dead ends: 40 [2018-01-25 03:32:12,758 INFO L226 Difference]: Without dead ends: 33 [2018-01-25 03:32:12,762 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 03:32:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-25 03:32:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-01-25 03:32:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 03:32:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-25 03:32:12,834 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-01-25 03:32:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:12,834 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-25 03:32:12,834 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:32:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-25 03:32:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:32:12,837 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:12,837 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 03:32:12,837 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-01-25 03:32:12,838 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:12,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:12,841 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:12,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:12,842 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:12,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:13,023 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 03:32:13,023 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:32:13,024 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:32:13,024 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:13,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:32:13,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:32:13,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:32:13,029 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-01-25 03:32:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:13,134 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-25 03:32:13,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:32:13,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 03:32:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:13,136 INFO L225 Difference]: With dead ends: 39 [2018-01-25 03:32:13,136 INFO L226 Difference]: Without dead ends: 35 [2018-01-25 03:32:13,138 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 03:32:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-25 03:32:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-01-25 03:32:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-25 03:32:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-25 03:32:13,145 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-01-25 03:32:13,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:13,145 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-25 03:32:13,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:32:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-25 03:32:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:32:13,147 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:13,148 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 03:32:13,148 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-01-25 03:32:13,149 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:13,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:13,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,153 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:13,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:13,241 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 03:32:13,242 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:32:13,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:32:13,242 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:13,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:32:13,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:32:13,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:32:13,244 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-01-25 03:32:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:13,325 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-01-25 03:32:13,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:32:13,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-25 03:32:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:13,328 INFO L225 Difference]: With dead ends: 30 [2018-01-25 03:32:13,328 INFO L226 Difference]: Without dead ends: 29 [2018-01-25 03:32:13,329 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 03:32:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-25 03:32:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-01-25 03:32:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 03:32:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-25 03:32:13,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-01-25 03:32:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:13,338 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-25 03:32:13,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:32:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-25 03:32:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:32:13,340 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:13,341 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 03:32:13,341 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-01-25 03:32:13,341 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:13,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:13,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,344 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:13,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:13,469 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 03:32:13,470 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:32:13,470 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:32:13,470 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:13,471 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:32:13,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:32:13,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:32:13,472 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-01-25 03:32:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:13,516 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-01-25 03:32:13,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:32:13,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-25 03:32:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:13,519 INFO L225 Difference]: With dead ends: 31 [2018-01-25 03:32:13,519 INFO L226 Difference]: Without dead ends: 30 [2018-01-25 03:32:13,520 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 03:32:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-25 03:32:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-01-25 03:32:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-25 03:32:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-25 03:32:13,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-01-25 03:32:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:13,531 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-25 03:32:13,531 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:32:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-25 03:32:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:32:13,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:13,533 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 03:32:13,533 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-01-25 03:32:13,534 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:13,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:13,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:13,541 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:13,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:13,623 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 03:32:13,623 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:32:13,623 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:32:13,624 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-25 03:32:13,625 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 03:32:13,671 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:32:13,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:32:15,087 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 03:32:15,089 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 03:32:15,106 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 03:32:15,847 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 75.12% of their original sizes. [2018-01-25 03:32:15,847 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 03:32:15,952 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 03:32:15,954 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:32:15,954 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2018-01-25 03:32:15,954 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:15,954 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 03:32:15,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 03:32:15,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:32:15,955 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2018-01-25 03:32:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:18,165 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-01-25 03:32:18,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:32:18,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-01-25 03:32:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:18,184 INFO L225 Difference]: With dead ends: 31 [2018-01-25 03:32:18,185 INFO L226 Difference]: Without dead ends: 30 [2018-01-25 03:32:18,185 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-01-25 03:32:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-25 03:32:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-01-25 03:32:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-25 03:32:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-01-25 03:32:18,191 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2018-01-25 03:32:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:18,192 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-01-25 03:32:18,192 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 03:32:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-01-25 03:32:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:32:18,193 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:18,193 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 03:32:18,193 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash 245416421, now seen corresponding path program 1 times [2018-01-25 03:32:18,194 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:18,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:18,196 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:18,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:18,196 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:18,210 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:18,445 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 03:32:18,445 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:32:18,445 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:32:18,446 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-25 03:32:18,446 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 03:32:18,447 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:32:18,447 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:32:19,251 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 03:32:19,251 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 03:32:19,268 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 03:32:19,755 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 72.49% of their original sizes. [2018-01-25 03:32:19,756 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 03:32:19,864 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 03:32:19,865 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:32:19,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2018-01-25 03:32:19,865 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:19,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:32:19,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:32:19,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:32:19,866 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2018-01-25 03:32:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:21,563 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-25 03:32:21,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:32:21,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-25 03:32:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:21,564 INFO L225 Difference]: With dead ends: 27 [2018-01-25 03:32:21,564 INFO L226 Difference]: Without dead ends: 26 [2018-01-25 03:32:21,564 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-01-25 03:32:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-25 03:32:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-01-25 03:32:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-25 03:32:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-01-25 03:32:21,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 22 [2018-01-25 03:32:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:21,570 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-01-25 03:32:21,570 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:32:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-01-25 03:32:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:32:21,571 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:21,571 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 03:32:21,571 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -694243740, now seen corresponding path program 1 times [2018-01-25 03:32:21,572 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:21,573 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:21,574 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:21,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:21,574 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:32:21,585 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:32:21,684 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 03:32:21,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:32:21,684 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:32:21,684 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-25 03:32:21,685 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 03:32:21,686 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:32:21,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:32:21,705 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 03:32:21,705 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 03:32:21,708 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 03:32:21,733 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 51.67% of their original sizes. [2018-01-25 03:32:21,733 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 03:32:21,788 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 03:32:21,788 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:32:21,789 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2018-01-25 03:32:21,789 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:32:21,789 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:32:21,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:32:21,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:32:21,790 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2018-01-25 03:32:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:32:22,587 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-25 03:32:22,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:32:22,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-01-25 03:32:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:32:22,588 INFO L225 Difference]: With dead ends: 39 [2018-01-25 03:32:22,588 INFO L226 Difference]: Without dead ends: 24 [2018-01-25 03:32:22,589 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:32:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-25 03:32:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-25 03:32:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-25 03:32:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-25 03:32:22,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 23 [2018-01-25 03:32:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:32:22,594 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-25 03:32:22,595 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:32:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-25 03:32:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:32:22,596 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:32:22,596 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 03:32:22,596 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:32:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-01-25 03:32:22,596 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:32:22,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:22,598 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:32:22,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:32:22,598 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:32:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 03:32:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-25 03:32:22,659 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-25 03:32:22,673 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 03:32:22,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 03:32:22 BoogieIcfgContainer [2018-01-25 03:32:22,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 03:32:22,689 INFO L168 Benchmark]: Toolchain (without parser) took 10981.64 ms. Allocated memory was 302.5 MB in the beginning and 870.8 MB in the end (delta: 568.3 MB). Free memory was 259.8 MB in the beginning and 661.5 MB in the end (delta: -401.7 MB). Peak memory consumption was 166.6 MB. Max. memory is 5.3 GB. [2018-01-25 03:32:22,690 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 03:32:22,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.20 ms. Allocated memory is still 302.5 MB. Free memory was 259.8 MB in the beginning and 247.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. [2018-01-25 03:32:22,690 INFO L168 Benchmark]: Boogie Preprocessor took 34.49 ms. Allocated memory is still 302.5 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:32:22,691 INFO L168 Benchmark]: RCFGBuilder took 199.42 ms. Allocated memory is still 302.5 MB. Free memory was 245.5 MB in the beginning and 232.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. [2018-01-25 03:32:22,691 INFO L168 Benchmark]: TraceAbstraction took 10514.73 ms. Allocated memory was 302.5 MB in the beginning and 870.8 MB in the end (delta: 568.3 MB). Free memory was 231.9 MB in the beginning and 661.5 MB in the end (delta: -429.6 MB). Peak memory consumption was 138.7 MB. Max. memory is 5.3 GB. [2018-01-25 03:32:22,693 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 224.20 ms. Allocated memory is still 302.5 MB. Free memory was 259.8 MB in the beginning and 247.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.49 ms. Allocated memory is still 302.5 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 199.42 ms. Allocated memory is still 302.5 MB. Free memory was 245.5 MB in the beginning and 232.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 10514.73 ms. Allocated memory was 302.5 MB in the beginning and 870.8 MB in the end (delta: 568.3 MB). Free memory was 231.9 MB in the beginning and 661.5 MB in the end (delta: -429.6 MB). Peak memory consumption was 138.7 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) : 0.196258 RENAME_VARIABLES(MILLISECONDS) : 0.088988 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.160654 PROJECTAWAY(MILLISECONDS) : 0.448714 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.170886 DISJOIN(MILLISECONDS) : 0.671029 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.117119 ADD_EQUALITY(MILLISECONDS) : 0.012846 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013953 #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) : 0.200543 RENAME_VARIABLES(MILLISECONDS) : 0.072367 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.176775 PROJECTAWAY(MILLISECONDS) : 0.301605 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.070181 DISJOIN(MILLISECONDS) : 0.717940 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.095728 ADD_EQUALITY(MILLISECONDS) : 0.016100 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008512 #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) : 0.156235 RENAME_VARIABLES(MILLISECONDS) : 0.022007 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.047626 PROJECTAWAY(MILLISECONDS) : 0.009057 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.160564 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.032470 ADD_EQUALITY(MILLISECONDS) : 0.010137 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.004160 #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, 10.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 91 SDslu, 421 SDs, 0 SdLazy, 76 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s 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, 2.3s 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, 0.8s 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_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-25_03-32-22-706.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_03-32-22-706.csv Received shutdown request...