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_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test6_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:42:55,276 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:42:55,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:42:55,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:42:55,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:42:55,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:42:55,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:42:55,300 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:42:55,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:42:55,303 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:42:55,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:42:55,305 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:42:55,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:42:55,307 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:42:55,318 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:42:55,321 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:42:55,323 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:42:55,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:42:55,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:42:55,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:42:55,335 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:42:55,335 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:42:55,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:42:55,336 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:42:55,337 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:42:55,338 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:42:55,338 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:42:55,339 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:42:55,339 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:42:55,340 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:42:55,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:42:55,341 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_mostprecise.epf [2018-01-24 20:42:55,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:42:55,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:42:55,355 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:42:55,356 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:42:55,356 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:42:55,356 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:42:55,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:42:55,357 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:42:55,357 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:42:55,358 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:42:55,358 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:42:55,358 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:42:55,358 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:42:55,358 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:42:55,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:42:55,359 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:42:55,359 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:42:55,359 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:42:55,359 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:42:55,360 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:42:55,360 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:42:55,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:42:55,362 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:42:55,362 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:42:55,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:42:55,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:42:55,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:42:55,363 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:42:55,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:42:55,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:42:55,363 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:42:55,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:42:55,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:42:55,364 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:42:55,364 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:42:55,366 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:42:55,366 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:42:55,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:42:55,422 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:42:55,427 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:42:55,429 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:42:55,429 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:42:55,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test6_1_false-valid-memtrack_true-termination.i [2018-01-24 20:42:55,650 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:42:55,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:42:55,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:42:55,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:42:55,666 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:42:55,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aa47da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55, skipping insertion in model container [2018-01-24 20:42:55,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,692 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:42:55,744 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:42:55,870 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:42:55,893 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:42:55,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55 WrapperNode [2018-01-24 20:42:55,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:42:55,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:42:55,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:42:55,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:42:55,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (1/1) ... [2018-01-24 20:42:55,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:42:55,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:42:55,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:42:55,940 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:42:55,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (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 [2018-01-24 20:42:55,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:42:55,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:42:55,992 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:42:55,992 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-01-24 20:42:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-01-24 20:42:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure probe2_6 [2018-01-24 20:42:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2018-01-24 20:42:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:42:55,993 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:42:55,993 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:42:55,994 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure probe2_6 [2018-01-24 20:42:55,995 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_6 [2018-01-24 20:42:55,996 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:42:55,996 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:42:55,996 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:42:55,996 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:42:56,210 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:42:56,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:42:56 BoogieIcfgContainer [2018-01-24 20:42:56,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:42:56,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:42:56,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:42:56,213 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:42:56,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:42:55" (1/3) ... [2018-01-24 20:42:56,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775dcfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:42:56, skipping insertion in model container [2018-01-24 20:42:56,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:42:55" (2/3) ... [2018-01-24 20:42:56,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775dcfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:42:56, skipping insertion in model container [2018-01-24 20:42:56,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:42:56" (3/3) ... [2018-01-24 20:42:56,216 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1_false-valid-memtrack_true-termination.i [2018-01-24 20:42:56,223 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:42:56,228 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-01-24 20:42:56,277 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:42:56,277 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:42:56,278 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:42:56,278 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:42:56,278 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:42:56,278 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:42:56,278 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:42:56,278 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:42:56,279 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:42:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-24 20:42:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:42:56,309 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:56,310 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:42:56,310 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash 3232357, now seen corresponding path program 1 times [2018-01-24 20:42:56,318 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:56,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,366 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:56,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,367 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:56,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:56,465 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:56,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:42:56,465 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:56,468 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:42:56,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:42:56,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:42:56,488 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2018-01-24 20:42:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:56,698 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2018-01-24 20:42:56,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:42:56,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:42:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:56,708 INFO L225 Difference]: With dead ends: 81 [2018-01-24 20:42:56,709 INFO L226 Difference]: Without dead ends: 76 [2018-01-24 20:42:56,711 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:42:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-24 20:42:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-01-24 20:42:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 20:42:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-01-24 20:42:56,749 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 4 [2018-01-24 20:42:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:56,750 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-01-24 20:42:56,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:42:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-01-24 20:42:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:42:56,750 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:56,751 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:42:56,751 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:56,751 INFO L82 PathProgramCache]: Analyzing trace with hash 3232358, now seen corresponding path program 1 times [2018-01-24 20:42:56,751 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:56,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,753 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:56,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,754 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:56,771 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:56,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:56,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:42:56,824 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:56,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:42:56,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:42:56,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:42:56,827 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 3 states. [2018-01-24 20:42:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:56,909 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2018-01-24 20:42:56,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:42:56,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:42:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:56,912 INFO L225 Difference]: With dead ends: 118 [2018-01-24 20:42:56,912 INFO L226 Difference]: Without dead ends: 116 [2018-01-24 20:42:56,913 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:42:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-24 20:42:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2018-01-24 20:42:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-01-24 20:42:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2018-01-24 20:42:56,930 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 4 [2018-01-24 20:42:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:56,930 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2018-01-24 20:42:56,930 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:42:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2018-01-24 20:42:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:42:56,932 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:56,932 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] [2018-01-24 20:42:56,932 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:56,933 INFO L82 PathProgramCache]: Analyzing trace with hash -293037669, now seen corresponding path program 1 times [2018-01-24 20:42:56,933 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:56,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,935 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:56,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:56,935 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:56,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:57,060 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:57,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:42:57,060 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:57,061 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:42:57,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:42:57,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:42:57,062 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand 6 states. [2018-01-24 20:42:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:57,603 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2018-01-24 20:42:57,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:42:57,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 20:42:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:57,606 INFO L225 Difference]: With dead ends: 124 [2018-01-24 20:42:57,606 INFO L226 Difference]: Without dead ends: 118 [2018-01-24 20:42:57,607 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:42:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-24 20:42:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2018-01-24 20:42:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-24 20:42:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2018-01-24 20:42:57,642 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 24 [2018-01-24 20:42:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:57,642 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2018-01-24 20:42:57,642 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:42:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2018-01-24 20:42:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:42:57,644 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:57,644 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] [2018-01-24 20:42:57,648 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:57,648 INFO L82 PathProgramCache]: Analyzing trace with hash -293037668, now seen corresponding path program 1 times [2018-01-24 20:42:57,648 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:57,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,650 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:57,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,651 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:57,706 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:57,760 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:57,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:42:57,760 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:57,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:42:57,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:42:57,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:42:57,761 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand 6 states. [2018-01-24 20:42:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:57,797 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2018-01-24 20:42:57,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:42:57,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 20:42:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:57,800 INFO L225 Difference]: With dead ends: 145 [2018-01-24 20:42:57,800 INFO L226 Difference]: Without dead ends: 116 [2018-01-24 20:42:57,801 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 [2018-01-24 20:42:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-24 20:42:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2018-01-24 20:42:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-24 20:42:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2018-01-24 20:42:57,820 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 24 [2018-01-24 20:42:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:57,820 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2018-01-24 20:42:57,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:42:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2018-01-24 20:42:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:42:57,821 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:57,821 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] [2018-01-24 20:42:57,822 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2126392044, now seen corresponding path program 1 times [2018-01-24 20:42:57,822 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:57,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,823 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:57,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,824 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:57,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:57,895 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:57,895 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:42:57,896 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:57,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:42:57,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:42:57,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:42:57,896 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 5 states. [2018-01-24 20:42:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:57,914 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2018-01-24 20:42:57,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:42:57,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-24 20:42:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:57,916 INFO L225 Difference]: With dead ends: 125 [2018-01-24 20:42:57,916 INFO L226 Difference]: Without dead ends: 73 [2018-01-24 20:42:57,917 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:42:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-24 20:42:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-01-24 20:42:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-24 20:42:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-24 20:42:57,926 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 24 [2018-01-24 20:42:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:57,927 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-24 20:42:57,927 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:42:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-24 20:42:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:42:57,928 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:57,928 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] [2018-01-24 20:42:57,928 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:57,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1815899569, now seen corresponding path program 1 times [2018-01-24 20:42:57,929 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:57,930 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,930 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:57,930 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:57,930 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:57,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:57,997 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:57,997 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:42:57,997 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:57,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:42:57,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:42:57,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:42:57,998 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2018-01-24 20:42:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:58,021 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2018-01-24 20:42:58,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:42:58,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 20:42:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:58,023 INFO L225 Difference]: With dead ends: 79 [2018-01-24 20:42:58,023 INFO L226 Difference]: Without dead ends: 69 [2018-01-24 20:42:58,023 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 [2018-01-24 20:42:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-01-24 20:42:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-01-24 20:42:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-24 20:42:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2018-01-24 20:42:58,029 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 24 [2018-01-24 20:42:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:58,029 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2018-01-24 20:42:58,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:42:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2018-01-24 20:42:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:42:58,029 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:58,030 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] [2018-01-24 20:42:58,030 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash -510641866, now seen corresponding path program 1 times [2018-01-24 20:42:58,030 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:58,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:58,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,032 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:58,047 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:58,109 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:58,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:42:58,109 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:58,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:42:58,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:42:58,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:42:58,111 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 6 states. [2018-01-24 20:42:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:58,142 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-01-24 20:42:58,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:42:58,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 20:42:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:58,146 INFO L225 Difference]: With dead ends: 69 [2018-01-24 20:42:58,146 INFO L226 Difference]: Without dead ends: 68 [2018-01-24 20:42:58,146 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:42:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-24 20:42:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-01-24 20:42:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-24 20:42:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2018-01-24 20:42:58,154 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2018-01-24 20:42:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:58,154 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2018-01-24 20:42:58,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:42:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2018-01-24 20:42:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:42:58,155 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:58,155 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] [2018-01-24 20:42:58,156 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash -510641865, now seen corresponding path program 1 times [2018-01-24 20:42:58,156 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:58,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:58,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,158 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:58,181 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:58,236 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:58,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:42:58,236 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:58,237 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:42:58,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:42:58,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:42:58,237 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 6 states. [2018-01-24 20:42:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:58,339 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-24 20:42:58,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:42:58,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 20:42:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:58,340 INFO L225 Difference]: With dead ends: 68 [2018-01-24 20:42:58,341 INFO L226 Difference]: Without dead ends: 67 [2018-01-24 20:42:58,341 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:42:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-24 20:42:58,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-24 20:42:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 20:42:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-01-24 20:42:58,348 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 26 [2018-01-24 20:42:58,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:58,349 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-01-24 20:42:58,349 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:42:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-01-24 20:42:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:42:58,350 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:58,350 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] [2018-01-24 20:42:58,350 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:58,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1858419564, now seen corresponding path program 1 times [2018-01-24 20:42:58,351 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:58,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,352 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:58,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,352 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:58,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:58,526 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:58,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:42:58,527 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:58,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:42:58,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:42:58,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:42:58,527 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 8 states. [2018-01-24 20:42:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:58,800 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2018-01-24 20:42:58,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:42:58,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-24 20:42:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:58,801 INFO L225 Difference]: With dead ends: 76 [2018-01-24 20:42:58,801 INFO L226 Difference]: Without dead ends: 75 [2018-01-24 20:42:58,802 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:42:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-24 20:42:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2018-01-24 20:42:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-24 20:42:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-24 20:42:58,807 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 32 [2018-01-24 20:42:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:58,807 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-24 20:42:58,808 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:42:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-24 20:42:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:42:58,809 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:58,809 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] [2018-01-24 20:42:58,809 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1858419565, now seen corresponding path program 1 times [2018-01-24 20:42:58,809 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:58,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,811 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:58,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:58,811 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:58,829 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:58,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:58,999 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:42:58,999 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:58,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:42:58,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:42:59,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:42:59,000 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2018-01-24 20:42:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:42:59,545 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-01-24 20:42:59,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:42:59,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 20:42:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:42:59,547 INFO L225 Difference]: With dead ends: 72 [2018-01-24 20:42:59,547 INFO L226 Difference]: Without dead ends: 70 [2018-01-24 20:42:59,547 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-01-24 20:42:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-24 20:42:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2018-01-24 20:42:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-24 20:42:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2018-01-24 20:42:59,571 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 32 [2018-01-24 20:42:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:42:59,571 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2018-01-24 20:42:59,571 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:42:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2018-01-24 20:42:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:42:59,572 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:42:59,572 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] [2018-01-24 20:42:59,572 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:42:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 758520105, now seen corresponding path program 1 times [2018-01-24 20:42:59,572 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:42:59,573 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:59,574 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:42:59,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:42:59,574 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:42:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:42:59,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:42:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:42:59,876 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:42:59,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:42:59,876 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:42:59,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:42:59,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:42:59,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:42:59,879 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 8 states. [2018-01-24 20:43:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:00,229 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2018-01-24 20:43:00,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:43:00,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-24 20:43:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:00,230 INFO L225 Difference]: With dead ends: 70 [2018-01-24 20:43:00,230 INFO L226 Difference]: Without dead ends: 64 [2018-01-24 20:43:00,230 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:43:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-24 20:43:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-01-24 20:43:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-24 20:43:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-24 20:43:00,237 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 32 [2018-01-24 20:43:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:00,238 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-24 20:43:00,238 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:43:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-24 20:43:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:43:00,239 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:00,239 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] [2018-01-24 20:43:00,239 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:43:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1206669578, now seen corresponding path program 1 times [2018-01-24 20:43:00,239 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:00,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:00,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:00,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:00,241 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:00,253 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:43:00,334 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:00,334 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:43:00,334 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:00,335 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:43:00,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:43:00,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:43:00,335 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-01-24 20:43:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:00,363 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-01-24 20:43:00,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:43:00,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-24 20:43:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:00,365 INFO L225 Difference]: With dead ends: 87 [2018-01-24 20:43:00,365 INFO L226 Difference]: Without dead ends: 61 [2018-01-24 20:43:00,365 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 [2018-01-24 20:43:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-24 20:43:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-01-24 20:43:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-24 20:43:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-01-24 20:43:00,373 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 34 [2018-01-24 20:43:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:00,373 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-01-24 20:43:00,373 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:43:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-01-24 20:43:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 20:43:00,374 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:00,374 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, 1, 1, 1] [2018-01-24 20:43:00,374 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-01-24 20:43:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2099227651, now seen corresponding path program 1 times [2018-01-24 20:43:00,375 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:00,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:00,376 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:00,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:00,377 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:43:00,429 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 20:43:00,447 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 20:43:00,452 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 8 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:00,453 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:00,454 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 8 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:00,454 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:00,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 08:43:00 BoogieIcfgContainer [2018-01-24 20:43:00,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 20:43:00,477 INFO L168 Benchmark]: Toolchain (without parser) took 4826.24 ms. Allocated memory was 309.3 MB in the beginning and 524.3 MB in the end (delta: 215.0 MB). Free memory was 268.2 MB in the beginning and 494.7 MB in the end (delta: -226.5 MB). Peak memory consumption was 153.5 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:00,478 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 309.3 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:43:00,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.92 ms. Allocated memory is still 309.3 MB. Free memory was 268.2 MB in the beginning and 254.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:00,478 INFO L168 Benchmark]: Boogie Preprocessor took 35.04 ms. Allocated memory is still 309.3 MB. Free memory was 254.3 MB in the beginning and 252.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:00,479 INFO L168 Benchmark]: RCFGBuilder took 271.49 ms. Allocated memory is still 309.3 MB. Free memory was 252.3 MB in the beginning and 233.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:00,479 INFO L168 Benchmark]: TraceAbstraction took 4264.32 ms. Allocated memory was 309.3 MB in the beginning and 524.3 MB in the end (delta: 215.0 MB). Free memory was 233.2 MB in the beginning and 494.7 MB in the end (delta: -261.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:00,480 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 309.3 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 245.92 ms. Allocated memory is still 309.3 MB. Free memory was 268.2 MB in the beginning and 254.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.04 ms. Allocated memory is still 309.3 MB. Free memory was 254.3 MB in the beginning and 252.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 271.49 ms. Allocated memory is still 309.3 MB. Free memory was 252.3 MB in the beginning and 233.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4264.32 ms. Allocated memory was 309.3 MB in the beginning and 524.3 MB in the end (delta: 215.0 MB). Free memory was 233.2 MB in the beginning and 494.7 MB in the end (delta: -261.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 8 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 8 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1478]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1478. Possible FailurePath: IVAL [\old(a6)=null, \old(a6)=null, a6={8:5}] [L1467] FCALL struct A a6; VAL [a6={9:0}] [L1479] CALL entry_point() VAL [a6={9:0}] [L1471] CALL, EXPR probe2_6(&a6) VAL [a={9:0}, a6={9:0}] [L1444] int ret = - -3; VAL [a={9:0}, a={9:0}, a6={9:0}, ret=3] [L1445] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={9:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, a6={9:0}, malloc(size)={7:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={7:0}, a6={9:0}, malloc(size)={7:0}, size=4] [L1445] EXPR ldv_malloc(sizeof(int)) VAL [a={9:0}, a={9:0}, a6={9:0}, ldv_malloc(sizeof(int))={7:0}, ret=3] [L1445] int *p = (int *)ldv_malloc(sizeof(int)); [L1446] COND FALSE !(p==0) VAL [a={9:0}, a={9:0}, a6={9:0}, p={7:0}, ret=3] [L1448] CALL, EXPR f6() VAL [a6={9:0}] [L1435] RET return __VERIFIER_nondet_int(); [L1448] EXPR f6() VAL [a={9:0}, a={9:0}, a6={9:0}, f6()=0, p={7:0}, ret=3] [L1448] ret = f6() [L1449] COND FALSE !(ret<0) VAL [a={9:0}, a={9:0}, a6={9:0}, p={7:0}, ret=0] [L1451] CALL, EXPR g6() VAL [a6={9:0}] [L1439] RET return __VERIFIER_nondet_int(); [L1451] EXPR g6() VAL [a={9:0}, a={9:0}, a6={9:0}, g6()=-1, p={7:0}, ret=0] [L1451] ret = g6() [L1452] COND TRUE ret<0 [L1453] RET return ret; VAL [\result=-1, a={9:0}, a={9:0}, a6={9:0}, p={7:0}, ret=-1] [L1471] EXPR probe2_6(&a6) VAL [a6={9:0}, probe2_6(&a6)=-1] [L1471] int ret = probe2_6(&a6); [L1472] COND FALSE !(ret==0) VAL [a6={9:0}, ret=-1] [L1475] RET, FCALL a6.p = 0 VAL [a6={9:0}, ret=-1] [L1479] entry_point() VAL [a6={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 13 error locations. UNSAFE Result, 4.1s OverallTime, 13 OverallIterations, 1 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 650 SDtfs, 537 SDslu, 1708 SDs, 0 SdLazy, 975 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 325 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 34732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test6_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_20-43-00-487.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test6_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_20-43-00-487.csv Received shutdown request...