java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0137_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:27:03,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:27:04,001 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:27:04,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:27:04,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:27:04,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:27:04,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:27:04,020 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:27:04,023 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:27:04,023 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:27:04,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:27:04,025 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:27:04,026 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:27:04,027 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:27:04,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:27:04,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:27:04,033 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:27:04,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:27:04,036 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:27:04,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:27:04,040 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:27:04,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:27:04,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:27:04,042 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:27:04,042 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:27:04,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:27:04,044 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:27:04,044 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:27:04,045 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:27:04,045 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:27:04,046 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:27:04,046 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-24 23:27:04,055 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:27:04,056 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:27:04,057 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:27:04,057 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:27:04,057 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:27:04,057 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:27:04,057 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:27:04,057 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:27:04,058 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:27:04,058 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:27:04,058 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:27:04,058 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:27:04,058 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:27:04,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:27:04,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:27:04,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:27:04,060 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:27:04,060 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:27:04,060 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:27:04,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:27:04,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:27:04,061 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:27:04,062 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:27:04,062 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:27:04,062 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:27:04,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:27:04,104 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:27:04,108 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:27:04,109 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:27:04,109 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:27:04,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0137_false-valid-deref.i [2018-01-24 23:27:04,272 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:27:04,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:27:04,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:27:04,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:27:04,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:27:04,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f990bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04, skipping insertion in model container [2018-01-24 23:27:04,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,303 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:27:04,346 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:27:04,473 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:27:04,495 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:27:04,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04 WrapperNode [2018-01-24 23:27:04,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:27:04,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:27:04,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:27:04,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:27:04,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (1/1) ... [2018-01-24 23:27:04,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:27:04,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:27:04,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:27:04,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:27:04,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (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 23:27:04,596 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure list_empty [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_add [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_del [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure list_add [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure list_move [2018-01-24 23:27:04,597 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_insert [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_read [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_destroy [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure val_from_node [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_sort [2018-01-24 23:27:04,598 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:27:04,599 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:27:04,600 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:27:04,600 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 23:27:04,600 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:27:04,600 INFO L128 BoogieDeclarations]: Found specification of procedure list_empty [2018-01-24 23:27:04,600 INFO L128 BoogieDeclarations]: Found specification of procedure __list_add [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure __list_del [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure list_add [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure list_move [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure gl_insert [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure gl_read [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure gl_destroy [2018-01-24 23:27:04,601 INFO L128 BoogieDeclarations]: Found specification of procedure val_from_node [2018-01-24 23:27:04,602 INFO L128 BoogieDeclarations]: Found specification of procedure gl_seek_max [2018-01-24 23:27:04,602 INFO L128 BoogieDeclarations]: Found specification of procedure gl_sort [2018-01-24 23:27:04,602 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:27:04,602 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:27:04,602 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:27:05,192 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:27:05,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:27:05 BoogieIcfgContainer [2018-01-24 23:27:05,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:27:05,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:27:05,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:27:05,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:27:05,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:27:04" (1/3) ... [2018-01-24 23:27:05,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a6189c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:27:05, skipping insertion in model container [2018-01-24 23:27:05,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:27:04" (2/3) ... [2018-01-24 23:27:05,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a6189c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:27:05, skipping insertion in model container [2018-01-24 23:27:05,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:27:05" (3/3) ... [2018-01-24 23:27:05,200 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0137_false-valid-deref.i [2018-01-24 23:27:05,208 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:27:05,216 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-24 23:27:05,262 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:27:05,262 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:27:05,263 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:27:05,263 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:27:05,263 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:27:05,263 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:27:05,263 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:27:05,263 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:27:05,264 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:27:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-24 23:27:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 23:27:05,293 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:05,294 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 23:27:05,294 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash 8574872, now seen corresponding path program 1 times [2018-01-24 23:27:05,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:05,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:05,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:05,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:05,344 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:05,386 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:05,433 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 23:27:05,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:05,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:27:05,436 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:05,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:27:05,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:27:05,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:27:05,545 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 3 states. [2018-01-24 23:27:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:05,760 INFO L93 Difference]: Finished difference Result 366 states and 406 transitions. [2018-01-24 23:27:05,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:27:05,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 23:27:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:05,775 INFO L225 Difference]: With dead ends: 366 [2018-01-24 23:27:05,775 INFO L226 Difference]: Without dead ends: 186 [2018-01-24 23:27:05,779 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 23:27:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-24 23:27:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2018-01-24 23:27:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-24 23:27:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 196 transitions. [2018-01-24 23:27:05,824 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 196 transitions. Word has length 4 [2018-01-24 23:27:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:05,825 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 196 transitions. [2018-01-24 23:27:05,825 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:27:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2018-01-24 23:27:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 23:27:05,825 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:05,825 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 23:27:05,826 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash 8574873, now seen corresponding path program 1 times [2018-01-24 23:27:05,826 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:05,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:05,827 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:05,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:05,828 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:05,845 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:05,896 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 23:27:05,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:05,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:27:05,896 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:05,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:27:05,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:27:05,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:27:05,898 INFO L87 Difference]: Start difference. First operand 185 states and 196 transitions. Second operand 3 states. [2018-01-24 23:27:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:06,106 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2018-01-24 23:27:06,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:27:06,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 23:27:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:06,109 INFO L225 Difference]: With dead ends: 189 [2018-01-24 23:27:06,110 INFO L226 Difference]: Without dead ends: 187 [2018-01-24 23:27:06,111 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 23:27:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-24 23:27:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-01-24 23:27:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-24 23:27:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2018-01-24 23:27:06,130 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 4 [2018-01-24 23:27:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:06,130 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2018-01-24 23:27:06,130 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:27:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2018-01-24 23:27:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 23:27:06,131 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:06,131 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:27:06,131 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1609065266, now seen corresponding path program 1 times [2018-01-24 23:27:06,131 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:06,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,132 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:06,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,133 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:06,156 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:06,218 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 23:27:06,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:06,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:27:06,218 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:06,219 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:27:06,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:27:06,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:27:06,219 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 4 states. [2018-01-24 23:27:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:06,379 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2018-01-24 23:27:06,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:27:06,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 23:27:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:06,381 INFO L225 Difference]: With dead ends: 183 [2018-01-24 23:27:06,381 INFO L226 Difference]: Without dead ends: 182 [2018-01-24 23:27:06,382 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:27:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-24 23:27:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-01-24 23:27:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 23:27:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2018-01-24 23:27:06,398 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 16 [2018-01-24 23:27:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:06,399 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2018-01-24 23:27:06,399 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:27:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2018-01-24 23:27:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 23:27:06,399 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:06,400 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:27:06,400 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1609065267, now seen corresponding path program 1 times [2018-01-24 23:27:06,400 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:06,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:06,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,401 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:06,422 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:06,518 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 23:27:06,518 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:06,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:27:06,519 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:06,519 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:27:06,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:27:06,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:27:06,520 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand 4 states. [2018-01-24 23:27:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:06,656 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2018-01-24 23:27:06,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:27:06,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-24 23:27:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:06,658 INFO L225 Difference]: With dead ends: 182 [2018-01-24 23:27:06,658 INFO L226 Difference]: Without dead ends: 181 [2018-01-24 23:27:06,658 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:27:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-24 23:27:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-01-24 23:27:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 23:27:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2018-01-24 23:27:06,672 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 16 [2018-01-24 23:27:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:06,672 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2018-01-24 23:27:06,672 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:27:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2018-01-24 23:27:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 23:27:06,673 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:06,673 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:27:06,673 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash -466429743, now seen corresponding path program 1 times [2018-01-24 23:27:06,673 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:06,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:06,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:06,674 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:06,703 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:06,795 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 23:27:06,795 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:06,795 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:27:06,795 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:06,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:27:06,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:27:06,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:27:06,796 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 7 states. [2018-01-24 23:27:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:07,045 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2018-01-24 23:27:07,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:27:07,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 23:27:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:07,048 INFO L225 Difference]: With dead ends: 190 [2018-01-24 23:27:07,048 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 23:27:07,048 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:27:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 23:27:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2018-01-24 23:27:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-24 23:27:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-24 23:27:07,060 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 19 [2018-01-24 23:27:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:07,061 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-24 23:27:07,061 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:27:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-24 23:27:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 23:27:07,061 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:07,062 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:27:07,062 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash -466429742, now seen corresponding path program 1 times [2018-01-24 23:27:07,062 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:07,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:07,063 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:07,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:07,063 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:07,082 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:07,219 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 23:27:07,219 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:07,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:27:07,220 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:07,220 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:27:07,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:27:07,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:27:07,221 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 7 states. [2018-01-24 23:27:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:07,627 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-24 23:27:07,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 23:27:07,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 23:27:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:07,629 INFO L225 Difference]: With dead ends: 188 [2018-01-24 23:27:07,629 INFO L226 Difference]: Without dead ends: 182 [2018-01-24 23:27:07,630 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:27:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-24 23:27:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-01-24 23:27:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 23:27:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2018-01-24 23:27:07,640 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 19 [2018-01-24 23:27:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:07,641 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2018-01-24 23:27:07,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:27:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2018-01-24 23:27:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 23:27:07,642 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:07,642 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] [2018-01-24 23:27:07,642 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1189060692, now seen corresponding path program 1 times [2018-01-24 23:27:07,642 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:07,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:07,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:07,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:07,644 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:07,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:07,815 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 23:27:07,816 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:07,835 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 23:27:07,835 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:07,836 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 23:27:07,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 23:27:07,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:27:07,837 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand 10 states. [2018-01-24 23:27:08,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:08,245 INFO L93 Difference]: Finished difference Result 209 states and 221 transitions. [2018-01-24 23:27:08,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 23:27:08,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 23:27:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:08,247 INFO L225 Difference]: With dead ends: 209 [2018-01-24 23:27:08,247 INFO L226 Difference]: Without dead ends: 208 [2018-01-24 23:27:08,247 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-01-24 23:27:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-24 23:27:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 200. [2018-01-24 23:27:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-24 23:27:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2018-01-24 23:27:08,263 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 22 [2018-01-24 23:27:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:08,263 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2018-01-24 23:27:08,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 23:27:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2018-01-24 23:27:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 23:27:08,264 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:08,264 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] [2018-01-24 23:27:08,265 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1189060691, now seen corresponding path program 1 times [2018-01-24 23:27:08,265 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:08,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:08,266 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:08,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:08,266 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:08,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:08,506 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 23:27:08,506 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:08,507 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:27:08,507 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:08,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 23:27:08,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 23:27:08,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:27:08,507 INFO L87 Difference]: Start difference. First operand 200 states and 219 transitions. Second operand 11 states. [2018-01-24 23:27:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:09,571 INFO L93 Difference]: Finished difference Result 373 states and 393 transitions. [2018-01-24 23:27:09,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 23:27:09,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-24 23:27:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:09,574 INFO L225 Difference]: With dead ends: 373 [2018-01-24 23:27:09,574 INFO L226 Difference]: Without dead ends: 372 [2018-01-24 23:27:09,574 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-01-24 23:27:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-01-24 23:27:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 296. [2018-01-24 23:27:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-01-24 23:27:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 362 transitions. [2018-01-24 23:27:09,591 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 362 transitions. Word has length 22 [2018-01-24 23:27:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:09,591 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 362 transitions. [2018-01-24 23:27:09,591 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 23:27:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 362 transitions. [2018-01-24 23:27:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 23:27:09,592 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:09,592 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] [2018-01-24 23:27:09,592 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1793824186, now seen corresponding path program 1 times [2018-01-24 23:27:09,592 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:09,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:09,593 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:09,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:09,593 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:09,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:09,700 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 23:27:09,701 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:09,701 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:27:09,701 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:09,701 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:27:09,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:27:09,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:27:09,702 INFO L87 Difference]: Start difference. First operand 296 states and 362 transitions. Second operand 7 states. [2018-01-24 23:27:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:10,083 INFO L93 Difference]: Finished difference Result 310 states and 376 transitions. [2018-01-24 23:27:10,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:27:10,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-01-24 23:27:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:10,086 INFO L225 Difference]: With dead ends: 310 [2018-01-24 23:27:10,086 INFO L226 Difference]: Without dead ends: 308 [2018-01-24 23:27:10,087 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:27:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-24 23:27:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 211. [2018-01-24 23:27:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-24 23:27:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 230 transitions. [2018-01-24 23:27:10,102 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 230 transitions. Word has length 23 [2018-01-24 23:27:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:10,103 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 230 transitions. [2018-01-24 23:27:10,103 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:27:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 230 transitions. [2018-01-24 23:27:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 23:27:10,103 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:10,103 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] [2018-01-24 23:27:10,104 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:10,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1793824187, now seen corresponding path program 1 times [2018-01-24 23:27:10,104 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:10,105 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:10,105 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:10,105 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:10,105 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:10,122 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:10,243 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 23:27:10,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:10,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:27:10,244 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:10,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 23:27:10,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 23:27:10,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 23:27:10,245 INFO L87 Difference]: Start difference. First operand 211 states and 230 transitions. Second operand 8 states. [2018-01-24 23:27:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:10,661 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2018-01-24 23:27:10,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:27:10,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-01-24 23:27:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:10,664 INFO L225 Difference]: With dead ends: 217 [2018-01-24 23:27:10,664 INFO L226 Difference]: Without dead ends: 215 [2018-01-24 23:27:10,664 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:27:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-24 23:27:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-01-24 23:27:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-24 23:27:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2018-01-24 23:27:10,675 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 23 [2018-01-24 23:27:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:10,676 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2018-01-24 23:27:10,676 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 23:27:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2018-01-24 23:27:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 23:27:10,676 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:10,676 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] [2018-01-24 23:27:10,676 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1583156317, now seen corresponding path program 1 times [2018-01-24 23:27:10,677 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:10,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:10,678 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:10,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:10,678 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:10,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:10,765 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 23:27:10,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:10,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:27:10,766 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:10,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:27:10,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:27:10,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:27:10,767 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand 5 states. [2018-01-24 23:27:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:11,265 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2018-01-24 23:27:11,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:27:11,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-24 23:27:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:11,266 INFO L225 Difference]: With dead ends: 211 [2018-01-24 23:27:11,267 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 23:27:11,267 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:27:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 23:27:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-01-24 23:27:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-24 23:27:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 223 transitions. [2018-01-24 23:27:11,279 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 223 transitions. Word has length 25 [2018-01-24 23:27:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:11,280 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 223 transitions. [2018-01-24 23:27:11,280 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:27:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 223 transitions. [2018-01-24 23:27:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 23:27:11,280 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:11,281 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] [2018-01-24 23:27:11,281 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:11,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1583156318, now seen corresponding path program 1 times [2018-01-24 23:27:11,281 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:11,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:11,282 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:11,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:11,282 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:11,295 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:11,442 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 23:27:11,442 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:11,442 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:27:11,442 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:11,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 23:27:11,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 23:27:11,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-24 23:27:11,443 INFO L87 Difference]: Start difference. First operand 210 states and 223 transitions. Second operand 8 states. [2018-01-24 23:27:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:11,682 INFO L93 Difference]: Finished difference Result 213 states and 223 transitions. [2018-01-24 23:27:11,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:27:11,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-01-24 23:27:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:11,683 INFO L225 Difference]: With dead ends: 213 [2018-01-24 23:27:11,683 INFO L226 Difference]: Without dead ends: 212 [2018-01-24 23:27:11,684 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-24 23:27:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-24 23:27:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2018-01-24 23:27:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-24 23:27:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 221 transitions. [2018-01-24 23:27:11,694 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 221 transitions. Word has length 25 [2018-01-24 23:27:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:11,695 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 221 transitions. [2018-01-24 23:27:11,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 23:27:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 221 transitions. [2018-01-24 23:27:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 23:27:11,696 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:11,696 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, 1, 1] [2018-01-24 23:27:11,696 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1201783090, now seen corresponding path program 1 times [2018-01-24 23:27:11,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:11,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:11,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:11,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:11,698 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:11,713 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:11,923 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 23:27:11,924 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:11,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 23:27:11,924 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:11,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 23:27:11,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 23:27:11,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:27:11,925 INFO L87 Difference]: Start difference. First operand 210 states and 221 transitions. Second operand 9 states. [2018-01-24 23:27:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:12,355 INFO L93 Difference]: Finished difference Result 210 states and 221 transitions. [2018-01-24 23:27:12,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:27:12,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-01-24 23:27:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:12,357 INFO L225 Difference]: With dead ends: 210 [2018-01-24 23:27:12,357 INFO L226 Difference]: Without dead ends: 209 [2018-01-24 23:27:12,357 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-01-24 23:27:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-01-24 23:27:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-01-24 23:27:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-24 23:27:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2018-01-24 23:27:12,370 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 41 [2018-01-24 23:27:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:12,371 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2018-01-24 23:27:12,371 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 23:27:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2018-01-24 23:27:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 23:27:12,372 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:12,372 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, 1, 1] [2018-01-24 23:27:12,372 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1201783091, now seen corresponding path program 1 times [2018-01-24 23:27:12,373 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:12,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:12,374 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:12,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:12,374 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:12,391 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:12,581 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 23:27:12,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:27:12,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:27:12,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:27:12,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 23:27:12,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 23:27:12,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:27:12,583 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand 11 states. [2018-01-24 23:27:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:27:13,117 INFO L93 Difference]: Finished difference Result 209 states and 220 transitions. [2018-01-24 23:27:13,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:27:13,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-01-24 23:27:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:27:13,137 INFO L225 Difference]: With dead ends: 209 [2018-01-24 23:27:13,137 INFO L226 Difference]: Without dead ends: 208 [2018-01-24 23:27:13,137 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-01-24 23:27:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-24 23:27:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-01-24 23:27:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-24 23:27:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 219 transitions. [2018-01-24 23:27:13,150 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 219 transitions. Word has length 41 [2018-01-24 23:27:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:27:13,151 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 219 transitions. [2018-01-24 23:27:13,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 23:27:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 219 transitions. [2018-01-24 23:27:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-24 23:27:13,152 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:27:13,152 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:27:13,152 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, ULTIMATE.initErr3RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr2RequiresViolation, ULTIMATE.initErr0RequiresViolation, val_from_nodeErr0RequiresViolation, val_from_nodeErr1RequiresViolation, list_moveErr0RequiresViolation, list_moveErr3RequiresViolation, list_moveErr2RequiresViolation, list_moveErr1RequiresViolation, gl_sortErr16RequiresViolation, gl_sortErr4RequiresViolation, gl_sortErr12RequiresViolation, gl_sortErr5RequiresViolation, gl_sortErr0RequiresViolation, gl_sortErr11RequiresViolation, gl_sortErr9RequiresViolation, gl_sortErr2RequiresViolation, gl_sortErr18RequiresViolation, gl_sortErr7RequiresViolation, gl_sortErr13RequiresViolation, gl_sortErr14RequiresViolation, gl_sortErr19RequiresViolation, gl_sortErr6RequiresViolation, gl_sortErr1RequiresViolation, gl_sortErr17RequiresViolation, gl_sortErr15RequiresViolation, gl_sortErr10RequiresViolation, gl_sortErr8RequiresViolation, gl_sortErr3RequiresViolation, list_addErr1RequiresViolation, list_addErr0RequiresViolation, list_emptyErr0RequiresViolation, list_emptyErr1RequiresViolation, __list_delErr0RequiresViolation, __list_delErr2RequiresViolation, __list_delErr3RequiresViolation, __list_delErr1RequiresViolation, mainErr0EnsuresViolation, gl_insertErr0RequiresViolation, gl_insertErr1RequiresViolation, gl_seek_maxErr0RequiresViolation, gl_seek_maxErr2RequiresViolation, gl_seek_maxErr1RequiresViolation, gl_seek_maxErr5RequiresViolation, gl_seek_maxErr3RequiresViolation, gl_seek_maxErr4RequiresViolation, gl_destroyErr4RequiresViolation, gl_destroyErr2RequiresViolation, gl_destroyErr0RequiresViolation, gl_destroyErr1RequiresViolation, gl_destroyErr6RequiresViolation, gl_destroyErr7RequiresViolation, gl_destroyErr3RequiresViolation, gl_destroyErr5RequiresViolation]=== [2018-01-24 23:27:13,152 INFO L82 PathProgramCache]: Analyzing trace with hash 856902849, now seen corresponding path program 1 times [2018-01-24 23:27:13,152 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:27:13,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:13,153 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:27:13,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:27:13,153 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:27:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:27:13,179 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:27:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:27:13,415 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:27:13,415 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 23:27:13,416 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-01-24 23:27:13,417 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [4], [7], [10], [13], [102], [104], [106], [111], [145], [146], [147], [150], [153], [165], [166], [170], [171], [175], [176], [177], [182], [184], [188], [238], [244], [245], [250], [251], [252], [253], [254], [256], [257] [2018-01-24 23:27:13,461 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:27:13,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown