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/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test19_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:39:37,957 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:39:37,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:39:37,974 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:39:37,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:39:37,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:39:37,977 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:39:37,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:39:37,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:39:37,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:39:37,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:39:37,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:39:37,982 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:39:37,983 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:39:37,984 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:39:37,987 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:39:37,989 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:39:37,991 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:39:37,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:39:37,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:39:37,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:39:38,004 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:39:38,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:39:38,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:39:38,016 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:39:38,016 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:39:38,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:39:38,017 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:39:38,017 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:39:38,017 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:39:38,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:39:38,018 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:39:38,018 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:39:38,018 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:39:38,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:39:38,019 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:39:38,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:39:38,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:39:38,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:39:38,020 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:39:38,020 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:39:38,020 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:39:38,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:39:38,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:39:38,021 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:39:38,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:39:38,021 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:39:38,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:39:38,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:39:38,022 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:39:38,022 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:39:38,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:39:38,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:39:38,022 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:39:38,023 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:39:38,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:39:38,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:39:38,023 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:39:38,023 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:39:38,024 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:39:38,025 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:39:38,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:39:38,074 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:39:38,079 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:39:38,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:39:38,081 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:39:38,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test19_false-valid-free.i [2018-01-21 10:39:38,275 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:39:38,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:39:38,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:39:38,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:39:38,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:39:38,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f922628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38, skipping insertion in model container [2018-01-21 10:39:38,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,312 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:39:38,366 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:39:38,476 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:39:38,494 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:39:38,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38 WrapperNode [2018-01-21 10:39:38,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:39:38,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:39:38,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:39:38,506 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:39:38,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (1/1) ... [2018-01-21 10:39:38,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:39:38,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:39:38,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:39:38,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:39:38,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (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 [2018-01-21 10:39:38,587 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:39:38,587 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:39:38,587 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 10:39:38,587 INFO L136 BoogieDeclarations]: Found implementation of procedure f19 [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure f19_undo [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure g19 [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_unsafe_19 [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_19 [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 10:39:38,588 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:39:38,588 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:39:38,588 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:39:38,588 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:39:38,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:39:38,589 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:39:38,589 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:39:38,589 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:39:38,589 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure f19 [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure f19_undo [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure g19 [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure probe_unsafe_19 [2018-01-21 10:39:38,590 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_19 [2018-01-21 10:39:38,591 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 10:39:38,591 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:39:38,591 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:39:38,591 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:39:38,867 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:39:38,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:39:38 BoogieIcfgContainer [2018-01-21 10:39:38,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:39:38,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:39:38,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:39:38,872 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:39:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:39:38" (1/3) ... [2018-01-21 10:39:38,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a3d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:39:38, skipping insertion in model container [2018-01-21 10:39:38,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:39:38" (2/3) ... [2018-01-21 10:39:38,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a3d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:39:38, skipping insertion in model container [2018-01-21 10:39:38,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:39:38" (3/3) ... [2018-01-21 10:39:38,875 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test19_false-valid-free.i [2018-01-21 10:39:38,882 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:39:38,890 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-01-21 10:39:38,930 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:39:38,931 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:39:38,931 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:39:38,931 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:39:38,931 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:39:38,931 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:39:38,931 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:39:38,931 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == disconnect_19Err0EnsuresViolation======== [2018-01-21 10:39:38,932 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:39:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-21 10:39:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 10:39:38,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:38,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:38,959 INFO L371 AbstractCegarLoop]: === Iteration 1 === [disconnect_19Err0EnsuresViolation]=== [2018-01-21 10:39:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 554684621, now seen corresponding path program 1 times [2018-01-21 10:39:38,965 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:39,012 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:39,012 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:39,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:39,013 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:39,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:39:39,273 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:39:39,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:39:39,274 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:39,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:39:39,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:39:39,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:39:39,366 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 6 states. [2018-01-21 10:39:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:39,450 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2018-01-21 10:39:39,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:39:39,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-01-21 10:39:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:39,459 INFO L225 Difference]: With dead ends: 116 [2018-01-21 10:39:39,459 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 10:39:39,463 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 [2018-01-21 10:39:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 10:39:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-21 10:39:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-21 10:39:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-21 10:39:39,498 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 36 [2018-01-21 10:39:39,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:39,501 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-21 10:39:39,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:39:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-21 10:39:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-21 10:39:39,504 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:39,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:39,505 INFO L371 AbstractCegarLoop]: === Iteration 2 === [disconnect_19Err0EnsuresViolation]=== [2018-01-21 10:39:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1592746949, now seen corresponding path program 1 times [2018-01-21 10:39:39,505 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:39,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:39,507 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:39,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:39,508 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:39,535 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 10:39:39,720 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:39:39,720 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:39:39,721 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 55 with the following transitions: [2018-01-21 10:39:39,723 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [7], [9], [10], [11], [16], [18], [21], [33], [34], [35], [37], [38], [40], [41], [42], [43], [44], [52], [54], [55], [56], [59], [61], [63], [69], [70], [72], [73], [79], [81], [84], [93], [94], [95], [96], [97], [98], [103], [105], [106], [107], [108], [109], [111], [112], [113] [2018-01-21 10:39:39,788 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:39:39,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:39:40,278 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:39:40,280 INFO L268 AbstractInterpreter]: Visited 18 different actions 18 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-01-21 10:39:40,301 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:39:40,656 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 62.88% of their original sizes. [2018-01-21 10:39:40,657 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:39:40,855 WARN L1007 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_probe_unsafe_19_~a.offset 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) .cse3)) (.cse1 (select |c_#valid| 0)) (.cse2 (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) .cse3))) (and (not (= 0 c_probe_unsafe_19_~a.base)) (= 0 .cse0) (forall ((v_weq0_1 Int)) (or (not (= v_weq0_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) v_weq0_1) (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) v_weq0_1)))) (forall ((v_weq0_1 Int) (v_weq1_1 Int)) (or (not (= v_weq0_1 c_probe_unsafe_19_~a.base)) (not (= v_weq1_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.base| v_weq0_1) v_weq1_1) (select (select |c_#memory_$Pointer$.offset| v_weq0_1) v_weq1_1)))) (= .cse0 .cse1) (= .cse2 c_probe_unsafe_19_~a.offset) (= 1 (select |c_#valid| c_probe_unsafe_19_~a.base)) (= .cse1 .cse2)))) is different from false [2018-01-21 10:39:40,860 WARN L1007 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_probe_unsafe_19_~a.offset 4))) (let ((.cse0 (select |c_#valid| 0)) (.cse1 (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) .cse2))) (and (= .cse0 |c_probe_unsafe_19_#t~mem9.base|) (not (= 0 c_probe_unsafe_19_~a.base)) (= 0 |c_probe_unsafe_19_#t~mem9.offset|) (forall ((v_weq0_1 Int)) (or (not (= v_weq0_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) v_weq0_1) (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) v_weq0_1)))) (forall ((v_weq0_1 Int) (v_weq1_1 Int)) (or (not (= v_weq0_1 c_probe_unsafe_19_~a.base)) (not (= v_weq1_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.base| v_weq0_1) v_weq1_1) (select (select |c_#memory_$Pointer$.offset| v_weq0_1) v_weq1_1)))) (= |c_probe_unsafe_19_#t~mem9.base| c_probe_unsafe_19_~a.offset) (= .cse1 .cse0) (= c_probe_unsafe_19_~a.offset (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) .cse2)) (= |c_probe_unsafe_19_#t~mem9.offset| .cse1) (= 1 (select |c_#valid| c_probe_unsafe_19_~a.base))))) is different from false [2018-01-21 10:39:40,864 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:39:40,865 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 10:39:40,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 18 [2018-01-21 10:39:40,865 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:40,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-21 10:39:40,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-21 10:39:40,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=91, Unknown=2, NotChecked=42, Total=182 [2018-01-21 10:39:40,868 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 14 states. [2018-01-21 10:39:42,326 WARN L1007 $PredicateComparison]: unable to prove that (let ((.cse4 (+ c_probe_unsafe_19_~a.offset 4))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) .cse4)) (.cse2 (select |c_#valid| 0)) (.cse0 (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) .cse4)) (.cse1 (select |c_old(#valid)| 0))) (and (= 0 |c_probe_unsafe_19_#t~ret7.offset|) (forall ((v_weq0_1 Int)) (or (not (= v_weq0_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) v_weq0_1) (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) v_weq0_1)))) (= .cse0 c_probe_unsafe_19_~a.offset) (= .cse1 |c_probe_unsafe_19_#in~a.offset|) (= 0 .cse1) (= |c_probe_unsafe_19_#t~ret7.offset| |c_probe_unsafe_19_#t~ret7.base|) (= |c_probe_unsafe_19_#t~ret7.base| .cse2) (not (= 0 c_probe_unsafe_19_~a.base)) (= 0 .cse3) (forall ((v_weq0_1 Int) (v_weq1_1 Int)) (or (not (= v_weq0_1 c_probe_unsafe_19_~a.base)) (not (= v_weq1_1 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.base| v_weq0_1) v_weq1_1) (select (select |c_#memory_$Pointer$.offset| v_weq0_1) v_weq1_1)))) (= |c_#valid| |c_old(#valid)|) (= .cse3 .cse2) (not (= |c_probe_unsafe_19_#in~a.base| 0)) (= 1 (select |c_#valid| |c_probe_unsafe_19_#in~a.base|)) (= .cse2 c_probe_unsafe_19_~a.offset) (= 1 (select |c_#valid| c_probe_unsafe_19_~a.base)) (= .cse2 .cse0) (= .cse1 c_probe_unsafe_19_~a.offset)))) is different from false [2018-01-21 10:39:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:39:44,483 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2018-01-21 10:39:44,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-21 10:39:44,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2018-01-21 10:39:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:39:44,486 INFO L225 Difference]: With dead ends: 114 [2018-01-21 10:39:44,486 INFO L226 Difference]: Without dead ends: 64 [2018-01-21 10:39:44,488 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=144, Unknown=3, NotChecked=84, Total=306 [2018-01-21 10:39:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-21 10:39:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-01-21 10:39:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-21 10:39:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-01-21 10:39:44,502 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 54 [2018-01-21 10:39:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:39:44,503 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-01-21 10:39:44,503 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-21 10:39:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-01-21 10:39:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-01-21 10:39:44,505 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:39:44,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:39:44,506 INFO L371 AbstractCegarLoop]: === Iteration 3 === [disconnect_19Err0EnsuresViolation]=== [2018-01-21 10:39:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1210093859, now seen corresponding path program 1 times [2018-01-21 10:39:44,507 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:39:44,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,508 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:39:44,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:39:44,509 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:39:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:39:44,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:39:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:39:44,593 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:39:44,593 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:39:44,593 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 57 with the following transitions: [2018-01-21 10:39:44,593 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [7], [9], [10], [11], [16], [18], [21], [33], [34], [35], [37], [38], [40], [41], [42], [43], [44], [52], [54], [55], [56], [59], [61], [63], [66], [67], [68], [69], [70], [72], [73], [79], [81], [84], [93], [94], [95], [96], [97], [98], [103], [105], [106], [107], [108], [109], [111], [112], [113] [2018-01-21 10:39:44,596 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:39:44,596 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:39:44,765 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:39:44,765 INFO L268 AbstractInterpreter]: Visited 21 different actions 22 times. Merged at 1 different actions 1 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 25 variables. [2018-01-21 10:39:44,773 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:39:44,940 INFO L232 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 59.1% of their original sizes. [2018-01-21 10:39:44,940 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:39:45,285 WARN L1007 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_probe_unsafe_19_~a.offset 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) .cse3)) (.cse1 (select |c_#valid| 0)) (.cse2 (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) .cse3))) (and (not (= 0 c_probe_unsafe_19_~a.base)) (forall ((v_weq0_2 Int)) (or (not (= v_weq0_2 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) v_weq0_2) (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) v_weq0_2)))) (= 0 .cse0) (forall ((v_weq0_2 Int) (v_weq1_2 Int)) (or (= (select (select |c_#memory_$Pointer$.base| v_weq0_2) v_weq1_2) (select (select |c_#memory_$Pointer$.offset| v_weq0_2) v_weq1_2)) (not (= v_weq1_2 (+ c_probe_unsafe_19_~a.offset 4))) (not (= v_weq0_2 c_probe_unsafe_19_~a.base)))) (= .cse0 .cse1) (= .cse2 c_probe_unsafe_19_~a.offset) (= 1 (select |c_#valid| c_probe_unsafe_19_~a.base)) (= .cse1 .cse2)))) is different from false [2018-01-21 10:39:45,290 WARN L1007 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_probe_unsafe_19_~a.offset 4))) (let ((.cse0 (select |c_#valid| 0)) (.cse1 (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) .cse2))) (and (= .cse0 |c_probe_unsafe_19_#t~mem9.base|) (not (= 0 c_probe_unsafe_19_~a.base)) (forall ((v_weq0_2 Int)) (or (not (= v_weq0_2 (+ c_probe_unsafe_19_~a.offset 4))) (= (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) v_weq0_2) (select (select |c_#memory_$Pointer$.base| c_probe_unsafe_19_~a.base) v_weq0_2)))) (= 0 |c_probe_unsafe_19_#t~mem9.offset|) (forall ((v_weq0_2 Int) (v_weq1_2 Int)) (or (= (select (select |c_#memory_$Pointer$.base| v_weq0_2) v_weq1_2) (select (select |c_#memory_$Pointer$.offset| v_weq0_2) v_weq1_2)) (not (= v_weq1_2 (+ c_probe_unsafe_19_~a.offset 4))) (not (= v_weq0_2 c_probe_unsafe_19_~a.base)))) (= |c_probe_unsafe_19_#t~mem9.base| c_probe_unsafe_19_~a.offset) (= .cse1 .cse0) (= c_probe_unsafe_19_~a.offset (select (select |c_#memory_$Pointer$.offset| c_probe_unsafe_19_~a.base) .cse2)) (= |c_probe_unsafe_19_#t~mem9.offset| .cse1) (= 1 (select |c_#valid| c_probe_unsafe_19_~a.base))))) is different from false [2018-01-21 10:39:45,293 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:39:45,294 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 10:39:45,294 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 19 [2018-01-21 10:39:45,294 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:39:45,294 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 10:39:45,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 10:39:45,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=156, Unknown=2, NotChecked=54, Total=272 [2018-01-21 10:39:45,295 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 17 states. [2018-01-21 10:39:46,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-21 10:39:46,210 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:192) 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:565) 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:157) 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) [2018-01-21 10:39:46,214 INFO L168 Benchmark]: Toolchain (without parser) took 7938.19 ms. Allocated memory was 304.1 MB in the beginning and 654.8 MB in the end (delta: 350.7 MB). Free memory was 261.4 MB in the beginning and 354.6 MB in the end (delta: -93.2 MB). Peak memory consumption was 257.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:46,214 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:39:46,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.53 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 248.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:46,215 INFO L168 Benchmark]: Boogie Preprocessor took 32.95 ms. Allocated memory is still 304.1 MB. Free memory was 248.4 MB in the beginning and 246.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:46,215 INFO L168 Benchmark]: RCFGBuilder took 329.28 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 224.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:46,216 INFO L168 Benchmark]: TraceAbstraction took 7343.35 ms. Allocated memory was 304.1 MB in the beginning and 654.8 MB in the end (delta: 350.7 MB). Free memory was 224.7 MB in the beginning and 354.6 MB in the end (delta: -129.9 MB). Peak memory consumption was 220.9 MB. Max. memory is 5.3 GB. [2018-01-21 10:39:46,217 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 224.53 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 248.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.95 ms. Allocated memory is still 304.1 MB. Free memory was 248.4 MB in the beginning and 246.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 329.28 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 224.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 7343.35 ms. Allocated memory was 304.1 MB in the beginning and 654.8 MB in the end (delta: 350.7 MB). Free memory was 224.7 MB in the beginning and 354.6 MB in the end (delta: -129.9 MB). Peak memory consumption was 220.9 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 : 2 LocStat_NO_SUPPORTING_EQUALITIES : 138 LocStat_NO_SUPPORTING_DISEQUALITIES : 20 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 4 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 59 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 4.242650 RENAME_VARIABLES(MILLISECONDS) : 2.297873 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.702531 PROJECTAWAY(MILLISECONDS) : 0.023026 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.076161 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 2.352414 ADD_EQUALITY(MILLISECONDS) : 0.088230 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008870 #CONJOIN_DISJUNCTIVE : 37 #RENAME_VARIABLES : 53 #UNFREEZE : 0 #CONJOIN : 79 #PROJECTAWAY : 55 #ADD_WEAK_EQUALITY : 7 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 52 #ADD_EQUALITY : 61 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 19 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 151 LocStat_NO_SUPPORTING_DISEQUALITIES : 24 LocStat_NO_DISJUNCTIONS : -38 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 31 TransStat_MAX_WEQGRAPH_SIZE : 4 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 65 TransStat_NO_SUPPORTING_DISEQUALITIES : 9 TransStat_NO_DISJUNCTIONS : 32 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.872327 RENAME_VARIABLES(MILLISECONDS) : 0.798194 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.528088 PROJECTAWAY(MILLISECONDS) : 0.014485 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.052727 DISJOIN(MILLISECONDS) : 2.684782 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.822627 ADD_EQUALITY(MILLISECONDS) : 0.019660 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.007622 #CONJOIN_DISJUNCTIVE : 44 #RENAME_VARIABLES : 63 #UNFREEZE : 0 #CONJOIN : 89 #PROJECTAWAY : 62 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 1 #RENAME_VARIABLES_DISJUNCTIVE : 62 #ADD_EQUALITY : 67 #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_test19_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-39-46-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test19_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-21_10-39-46-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test19_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-21_10-39-46-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test19_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-21_10-39-46-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test19_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-21_10-39-46-229.csv Received shutdown request...