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_precise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:04:28,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:04:28,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:04:28,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:04:28,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:04:28,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:04:28,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:04:28,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:04:28,308 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:04:28,309 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:04:28,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:04:28,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:04:28,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:04:28,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:04:28,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:04:28,317 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:04:28,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:04:28,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:04:28,323 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:04:28,324 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:04:28,327 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:04:28,327 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:04:28,327 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:04:28,329 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:04:28,330 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:04:28,331 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:04:28,331 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:04:28,332 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:04:28,332 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:04:28,333 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:04:28,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:04:28,334 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_precise.epf [2018-01-25 00:04:28,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:04:28,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:04:28,343 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:04:28,343 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:04:28,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:04:28,343 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:04:28,344 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:04:28,344 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:04:28,344 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:04:28,344 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:04:28,345 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:04:28,346 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:04:28,346 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:04:28,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:04:28,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:04:28,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:04:28,347 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:04:28,348 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:04:28,349 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:04:28,349 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:04:28,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:04:28,400 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:04:28,404 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:04:28,406 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:04:28,407 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:04:28,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-01-25 00:04:28,600 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:04:28,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:04:28,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:04:28,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:04:28,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:04:28,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fe14d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28, skipping insertion in model container [2018-01-25 00:04:28,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,634 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:04:28,685 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:04:28,804 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:04:28,824 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:04:28,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28 WrapperNode [2018-01-25 00:04:28,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:04:28,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:04:28,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:04:28,833 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:04:28,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (1/1) ... [2018-01-25 00:04:28,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:04:28,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:04:28,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:04:28,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:04:28,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (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 00:04:28,916 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:04:28,916 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:04:28,916 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 00:04:28,916 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 00:04:28,916 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:04:28,916 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:04:28,916 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:04:28,916 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:04:28,917 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:04:29,093 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:04:29,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:04:29 BoogieIcfgContainer [2018-01-25 00:04:29,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:04:29,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:04:29,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:04:29,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:04:29,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:04:28" (1/3) ... [2018-01-25 00:04:29,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4bc9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:04:29, skipping insertion in model container [2018-01-25 00:04:29,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:04:28" (2/3) ... [2018-01-25 00:04:29,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4bc9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:04:29, skipping insertion in model container [2018-01-25 00:04:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:04:29" (3/3) ... [2018-01-25 00:04:29,100 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-01-25 00:04:29,107 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:04:29,113 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-25 00:04:29,166 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:04:29,167 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:04:29,167 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:04:29,167 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:04:29,167 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:04:29,167 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:04:29,167 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:04:29,168 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:04:29,169 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:04:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-25 00:04:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 00:04:29,196 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:04:29,197 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:04:29,197 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 00:04:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash -144006031, now seen corresponding path program 1 times [2018-01-25 00:04:29,204 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:04:29,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,251 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:04:29,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,251 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:04:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:04:29,306 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:04:29,400 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 00:04:29,402 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:04:29,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 00:04:29,402 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:04:29,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 00:04:29,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 00:04:29,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:04:29,418 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-25 00:04:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:04:29,589 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2018-01-25 00:04:29,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 00:04:29,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-25 00:04:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:04:29,602 INFO L225 Difference]: With dead ends: 53 [2018-01-25 00:04:29,602 INFO L226 Difference]: Without dead ends: 40 [2018-01-25 00:04:29,605 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 00:04:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-25 00:04:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-01-25 00:04:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-25 00:04:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-01-25 00:04:29,640 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 17 [2018-01-25 00:04:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:04:29,641 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-01-25 00:04:29,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 00:04:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-01-25 00:04:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:04:29,643 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:04:29,643 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:04:29,643 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 00:04:29,643 INFO L82 PathProgramCache]: Analyzing trace with hash -716261389, now seen corresponding path program 1 times [2018-01-25 00:04:29,644 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:04:29,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,646 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:04:29,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,646 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:04:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:04:29,667 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:04:29,755 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 00:04:29,755 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:04:29,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:04:29,755 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:04:29,757 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:04:29,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:04:29,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:04:29,758 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2018-01-25 00:04:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:04:29,827 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-01-25 00:04:29,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:04:29,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 00:04:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:04:29,829 INFO L225 Difference]: With dead ends: 52 [2018-01-25 00:04:29,830 INFO L226 Difference]: Without dead ends: 48 [2018-01-25 00:04:29,831 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 00:04:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-25 00:04:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2018-01-25 00:04:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-25 00:04:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-01-25 00:04:29,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-01-25 00:04:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:04:29,840 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-01-25 00:04:29,840 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:04:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-01-25 00:04:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 00:04:29,842 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:04:29,842 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:04:29,842 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 00:04:29,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1119113233, now seen corresponding path program 1 times [2018-01-25 00:04:29,842 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:04:29,844 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:04:29,844 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,844 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:04:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:04:29,862 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:04:29,917 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 00:04:29,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:04:29,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:04:29,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:04:29,918 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:04:29,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:04:29,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:04:29,918 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 4 states. [2018-01-25 00:04:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:04:29,942 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2018-01-25 00:04:29,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:04:29,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 00:04:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:04:29,944 INFO L225 Difference]: With dead ends: 56 [2018-01-25 00:04:29,944 INFO L226 Difference]: Without dead ends: 52 [2018-01-25 00:04:29,944 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:04:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-25 00:04:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-01-25 00:04:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-25 00:04:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-01-25 00:04:29,951 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 21 [2018-01-25 00:04:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:04:29,951 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-01-25 00:04:29,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:04:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-01-25 00:04:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:04:29,952 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:04:29,952 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 00:04:29,952 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 00:04:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1380395530, now seen corresponding path program 1 times [2018-01-25 00:04:29,953 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:04:29,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,954 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:04:29,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:29,954 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:04:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:04:29,964 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:04:30,013 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 00:04:30,014 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:04:30,014 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:04:30,014 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-25 00:04:30,016 INFO L201 CegarAbsIntRunner]: [0], [6], [7], [8], [9], [16], [18], [22], [26], [31], [33], [35], [43], [44], [45], [47], [49], [50], [51], [52] [2018-01-25 00:04:30,059 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:04:30,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 00:04:30,191 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 00:04:30,193 INFO L268 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-25 00:04:30,206 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 00:04:30,294 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 67.07% of their original sizes. [2018-01-25 00:04:30,294 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 00:04:30,335 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 00:04:30,336 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 00:04:30,336 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-01-25 00:04:30,336 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:04:30,336 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:04:30,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:04:30,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:04:30,337 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2018-01-25 00:04:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:04:33,292 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-01-25 00:04:33,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:04:33,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-01-25 00:04:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:04:33,293 INFO L225 Difference]: With dead ends: 60 [2018-01-25 00:04:33,293 INFO L226 Difference]: Without dead ends: 32 [2018-01-25 00:04:33,294 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:04:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-01-25 00:04:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-01-25 00:04:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-25 00:04:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-01-25 00:04:33,300 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2018-01-25 00:04:33,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:04:33,300 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-01-25 00:04:33,300 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:04:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-01-25 00:04:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 00:04:33,301 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:04:33,301 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 00:04:33,302 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 00:04:33,302 INFO L82 PathProgramCache]: Analyzing trace with hash 679154700, now seen corresponding path program 1 times [2018-01-25 00:04:33,302 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:04:33,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:33,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:04:33,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:04:33,304 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:04:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:04:33,319 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:04:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:04:33,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:04:33,384 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:04:33,384 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-01-25 00:04:33,385 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [5], [6], [7], [8], [9], [16], [18], [22], [26], [31], [33], [35], [43], [44], [45], [47], [49], [50], [51], [52] [2018-01-25 00:04:33,386 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:04:33,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 00:04:34,228 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 00:04:34,229 INFO L268 AbstractInterpreter]: Visited 23 different actions 37 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 18 variables. [2018-01-25 00:04:34,234 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 00:04:34,694 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 77.76% of their original sizes. [2018-01-25 00:04:34,694 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 00:04:34,983 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 00:04:34,983 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 00:04:34,984 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 18 [2018-01-25 00:04:34,984 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:04:34,984 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-25 00:04:34,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-25 00:04:34,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:04:34,985 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 14 states. [2018-01-25 00:04:35,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 00:04:35,731 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCongruenceClosure.(WeqCongruenceClosure.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.copyWeqCc(WeqCcManager.java:1327) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.isStrongerThan(WeqCcManager.java:582) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqConstraint.isStrongerThan(EqConstraint.java:283) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.isSubsetOf(EqState.java:199) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.isSubsetOf(EqState.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.getMaximalElements(DisjunctiveAbstractState.java:564) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.crossProduct(DisjunctiveAbstractState.java:407) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.intersect(DisjunctiveAbstractState.java:291) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner$AbsIntPredicateUnifier.lambda$3(CegarAbsIntRunner.java:684) at java.util.stream.ReduceOps$2ReducingSink.accept(ReduceOps.java:123) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:479) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner$AbsIntPredicateUnifier.getOrConstructPredicateForConjunction(CegarAbsIntRunner.java:684) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:261) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1054) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:956) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:185) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:552) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:522) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-25 00:04:35,734 INFO L168 Benchmark]: Toolchain (without parser) took 7133.09 ms. Allocated memory was 303.6 MB in the beginning and 855.6 MB in the end (delta: 552.1 MB). Free memory was 260.5 MB in the beginning and 820.2 MB in the end (delta: -559.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 00:04:35,734 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 303.6 MB. Free memory is still 267.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 00:04:35,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.78 ms. Allocated memory is still 303.6 MB. Free memory was 260.5 MB in the beginning and 247.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-25 00:04:35,735 INFO L168 Benchmark]: Boogie Preprocessor took 34.88 ms. Allocated memory is still 303.6 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 00:04:35,735 INFO L168 Benchmark]: RCFGBuilder took 225.91 ms. Allocated memory is still 303.6 MB. Free memory was 245.5 MB in the beginning and 230.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-25 00:04:35,735 INFO L168 Benchmark]: TraceAbstraction took 6638.31 ms. Allocated memory was 303.6 MB in the beginning and 855.6 MB in the end (delta: 552.1 MB). Free memory was 230.5 MB in the beginning and 820.2 MB in the end (delta: -589.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 00:04:35,737 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 303.6 MB. Free memory is still 267.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 225.78 ms. Allocated memory is still 303.6 MB. Free memory was 260.5 MB in the beginning and 247.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.88 ms. Allocated memory is still 303.6 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 225.91 ms. Allocated memory is still 303.6 MB. Free memory was 245.5 MB in the beginning and 230.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6638.31 ms. Allocated memory was 303.6 MB in the beginning and 855.6 MB in the end (delta: 552.1 MB). Free memory was 230.5 MB in the beginning and 820.2 MB in the end (delta: -589.8 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 13 LocStat_MAX_WEQGRAPH_SIZE : 1 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 61 LocStat_NO_SUPPORTING_DISEQUALITIES : 0 LocStat_NO_DISJUNCTIONS : -26 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 22 TransStat_MAX_WEQGRAPH_SIZE : 1 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 26 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 23 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.874394 RENAME_VARIABLES(MILLISECONDS) : 0.171680 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.359987 PROJECTAWAY(MILLISECONDS) : 0.032400 ADD_WEAK_EQUALITY(MILLISECONDS) : 3.010244 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.223596 ADD_EQUALITY(MILLISECONDS) : 0.040454 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.015998 #CONJOIN_DISJUNCTIVE : 21 #RENAME_VARIABLES : 43 #UNFREEZE : 0 #CONJOIN : 44 #PROJECTAWAY : 44 #ADD_WEAK_EQUALITY : 1 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 42 #ADD_EQUALITY : 26 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 20 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 114 LocStat_NO_SUPPORTING_DISEQUALITIES : 15 LocStat_NO_DISJUNCTIONS : -40 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 31 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 43 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 32 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.091563 RENAME_VARIABLES(MILLISECONDS) : 0.046719 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.072213 PROJECTAWAY(MILLISECONDS) : 0.202072 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.066170 DISJOIN(MILLISECONDS) : 0.262488 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.061777 ADD_EQUALITY(MILLISECONDS) : 0.008894 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.014124 #CONJOIN_DISJUNCTIVE : 62 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 112 #PROJECTAWAY : 101 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 14 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCongruenceClosure.(WeqCongruenceClosure.java:157) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_00-04-35-746.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_00-04-35-746.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_00-04-35-746.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-25_00-04-35-746.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-25_00-04-35-746.csv Received shutdown request...