java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:29:55,163 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:29:55,165 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:29:55,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:29:55,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:29:55,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:29:55,183 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:29:55,185 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:29:55,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:29:55,188 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:29:55,189 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:29:55,189 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:29:55,190 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:29:55,192 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:29:55,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:29:55,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:29:55,198 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:29:55,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:29:55,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:29:55,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:29:55,206 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:29:55,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:29:55,207 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:29:55,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:29:55,209 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:29:55,210 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:29:55,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:29:55,211 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:29:55,212 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:29:55,212 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:29:55,213 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:29:55,213 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:29:55,224 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:29:55,224 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:29:55,225 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:29:55,225 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:29:55,226 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:29:55,226 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:29:55,226 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:29:55,226 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:29:55,226 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:29:55,227 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:29:55,227 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:29:55,227 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:29:55,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:29:55,228 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:29:55,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:29:55,228 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:29:55,228 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:29:55,229 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:29:55,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:29:55,229 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:29:55,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:29:55,229 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:29:55,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:29:55,230 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:29:55,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:29:55,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:29:55,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:29:55,230 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:29:55,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:29:55,232 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:29:55,233 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:29:55,233 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:29:55,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:29:55,293 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:29:55,300 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:29:55,302 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:29:55,302 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:29:55,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-01-25 03:29:55,558 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:29:55,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:29:55,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:29:55,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:29:55,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:29:55,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed6c251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55, skipping insertion in model container [2018-01-25 03:29:55,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,608 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:29:55,682 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:29:55,856 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:29:55,877 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:29:55,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55 WrapperNode [2018-01-25 03:29:55,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:29:55,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:29:55,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:29:55,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:29:55,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... [2018-01-25 03:29:55,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:29:55,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:29:55,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:29:55,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:29:55,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:29:55,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:29:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:29:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 03:29:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 03:29:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:29:55,993 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:29:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:29:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 03:29:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 03:29:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:29:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:29:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:29:56,192 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:29:56,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:29:56 BoogieIcfgContainer [2018-01-25 03:29:56,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:29:56,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:29:56,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:29:56,196 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:29:56,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:29:55" (1/3) ... [2018-01-25 03:29:56,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a348042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:29:56, skipping insertion in model container [2018-01-25 03:29:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:29:55" (2/3) ... [2018-01-25 03:29:56,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a348042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:29:56, skipping insertion in model container [2018-01-25 03:29:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:29:56" (3/3) ... [2018-01-25 03:29:56,200 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-01-25 03:29:56,207 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:29:56,215 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-25 03:29:56,265 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:29:56,265 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:29:56,266 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:29:56,266 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:29:56,266 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:29:56,266 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:29:56,266 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:29:56,266 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:29:56,267 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:29:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-25 03:29:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:29:56,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:29:56,296 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:29:56,296 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:29:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash -144006031, now seen corresponding path program 1 times [2018-01-25 03:29:56,305 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:29:56,367 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:56,367 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:29:56,367 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:56,367 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:29:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:29:56,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:29:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:29:56,534 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:29:56,534 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:29:56,534 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:29:56,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:29:56,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:29:56,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:29:56,556 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-25 03:29:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:29:56,779 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2018-01-25 03:29:56,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:29:56,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-25 03:29:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:29:56,789 INFO L225 Difference]: With dead ends: 53 [2018-01-25 03:29:56,789 INFO L226 Difference]: Without dead ends: 40 [2018-01-25 03:29:56,792 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:29:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-25 03:29:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-01-25 03:29:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-25 03:29:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-01-25 03:29:56,837 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 17 [2018-01-25 03:29:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:29:56,838 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-01-25 03:29:56,838 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:29:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-01-25 03:29:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:29:56,840 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:29:56,840 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 03:29:56,840 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:29:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash -716261389, now seen corresponding path program 1 times [2018-01-25 03:29:56,841 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:29:56,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:56,843 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:29:56,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:56,843 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:29:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:29:56,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:29:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:29:56,999 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:29:57,000 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:29:57,000 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:29:57,002 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:29:57,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:29:57,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:29:57,003 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2018-01-25 03:29:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:29:57,081 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-01-25 03:29:57,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:29:57,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 03:29:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:29:57,083 INFO L225 Difference]: With dead ends: 52 [2018-01-25 03:29:57,084 INFO L226 Difference]: Without dead ends: 48 [2018-01-25 03:29:57,085 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:29:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-25 03:29:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2018-01-25 03:29:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-25 03:29:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-01-25 03:29:57,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-01-25 03:29:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:29:57,096 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-01-25 03:29:57,096 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:29:57,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-01-25 03:29:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:29:57,097 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:29:57,097 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 03:29:57,098 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:29:57,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1119113233, now seen corresponding path program 1 times [2018-01-25 03:29:57,098 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:29:57,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:57,100 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:29:57,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:57,100 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:29:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:29:57,123 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:29:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:29:57,205 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:29:57,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:29:57,205 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:29:57,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:29:57,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:29:57,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:29:57,206 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 4 states. [2018-01-25 03:29:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:29:57,240 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2018-01-25 03:29:57,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:29:57,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 03:29:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:29:57,242 INFO L225 Difference]: With dead ends: 56 [2018-01-25 03:29:57,242 INFO L226 Difference]: Without dead ends: 52 [2018-01-25 03:29:57,242 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 03:29:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-25 03:29:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-01-25 03:29:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-25 03:29:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-01-25 03:29:57,251 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 21 [2018-01-25 03:29:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:29:57,251 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-01-25 03:29:57,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:29:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-01-25 03:29:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 03:29:57,253 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:29:57,253 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:29:57,253 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:29:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1380395530, now seen corresponding path program 1 times [2018-01-25 03:29:57,254 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:29:57,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:57,256 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:29:57,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:29:57,256 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:29:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:29:57,270 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:29:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 03:29:57,353 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:29:57,353 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:29:57,354 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-25 03:29:57,356 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 03:29:57,402 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:29:57,403 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:29:57,584 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 03:29:57,586 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 03:29:57,609 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 03:29:57,716 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 67.07% of their original sizes. [2018-01-25 03:29:57,815 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 03:29:57,863 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 03:29:57,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:29:57,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-01-25 03:29:57,865 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:29:57,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:29:57,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:29:57,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:29:57,866 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2018-01-25 03:30:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:01,618 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-01-25 03:30:01,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:30:01,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-01-25 03:30:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:01,620 INFO L225 Difference]: With dead ends: 60 [2018-01-25 03:30:01,620 INFO L226 Difference]: Without dead ends: 32 [2018-01-25 03:30:01,621 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 03:30:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-01-25 03:30:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-01-25 03:30:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-25 03:30:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-01-25 03:30:01,628 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2018-01-25 03:30:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:01,628 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-01-25 03:30:01,628 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:30:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-01-25 03:30:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:30:01,629 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:01,629 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:30:01,629 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-25 03:30:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash 679154700, now seen corresponding path program 1 times [2018-01-25 03:30:01,630 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:01,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:01,631 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:01,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:01,632 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:01,650 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:01,871 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 03:30:01,872 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:30:01,872 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:30:01,872 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-01-25 03:30:01,872 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 03:30:01,874 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:30:01,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:30:03,020 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 03:30:03,021 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 03:30:03,049 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 03:30:03,784 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 77.76% of their original sizes. [2018-01-25 03:30:03,785 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 03:30:04,305 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 03:30:04,306 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:30:04,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 18 [2018-01-25 03:30:04,306 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:04,307 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-25 03:30:04,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-25 03:30:04,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-25 03:30:04,307 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 14 states. [2018-01-25 03:30:05,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:30:05,715 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 03:30:05,719 INFO L168 Benchmark]: Toolchain (without parser) took 10160.51 ms. Allocated memory was 286.8 MB in the beginning and 804.3 MB in the end (delta: 517.5 MB). Free memory was 245.7 MB in the beginning and 707.5 MB in the end (delta: -461.8 MB). Peak memory consumption was 55.7 MB. Max. memory is 5.3 GB. [2018-01-25 03:30:05,720 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 286.8 MB. Free memory is still 251.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 03:30:05,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.19 ms. Allocated memory is still 286.8 MB. Free memory was 245.7 MB in the beginning and 231.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:30:05,720 INFO L168 Benchmark]: Boogie Preprocessor took 46.13 ms. Allocated memory is still 286.8 MB. Free memory was 231.7 MB in the beginning and 229.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:30:05,721 INFO L168 Benchmark]: RCFGBuilder took 259.31 ms. Allocated memory is still 286.8 MB. Free memory was 229.8 MB in the beginning and 214.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:30:05,721 INFO L168 Benchmark]: TraceAbstraction took 9524.14 ms. Allocated memory was 286.8 MB in the beginning and 804.3 MB in the end (delta: 517.5 MB). Free memory was 214.7 MB in the beginning and 707.5 MB in the end (delta: -492.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. [2018-01-25 03:30:05,723 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 286.8 MB. Free memory is still 251.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 317.19 ms. Allocated memory is still 286.8 MB. Free memory was 245.7 MB in the beginning and 231.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 46.13 ms. Allocated memory is still 286.8 MB. Free memory was 231.7 MB in the beginning and 229.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 259.31 ms. Allocated memory is still 286.8 MB. Free memory was 229.8 MB in the beginning and 214.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 9524.14 ms. Allocated memory was 286.8 MB in the beginning and 804.3 MB in the end (delta: 517.5 MB). Free memory was 214.7 MB in the beginning and 707.5 MB in the end (delta: -492.8 MB). Peak memory consumption was 24.7 MB. 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) : 1.223411 RENAME_VARIABLES(MILLISECONDS) : 0.204553 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.407176 PROJECTAWAY(MILLISECONDS) : 0.028212 ADD_WEAK_EQUALITY(MILLISECONDS) : 5.094916 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.269985 ADD_EQUALITY(MILLISECONDS) : 0.049575 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.034363 #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) : 0.111116 RENAME_VARIABLES(MILLISECONDS) : 0.050185 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.087416 PROJECTAWAY(MILLISECONDS) : 0.336747 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.066909 DISJOIN(MILLISECONDS) : 0.500336 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.065754 ADD_EQUALITY(MILLISECONDS) : 0.017831 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.025001 #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_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_03-30-05-735.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_03-30-05-735.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_03-30-05-735.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-25_03-30-05-735.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-25_03-30-05-735.csv Received shutdown request...