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_smtcomp.epf -i ../../../trunk/examples/svcomp/memsafety/test-0137_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 05:34:57,443 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 05:34:57,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 05:34:57,456 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 05:34:57,457 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 05:34:57,458 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 05:34:57,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 05:34:57,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 05:34:57,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 05:34:57,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 05:34:57,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 05:34:57,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 05:34:57,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 05:34:57,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 05:34:57,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 05:34:57,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 05:34:57,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 05:34:57,474 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 05:34:57,475 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 05:34:57,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 05:34:57,479 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 05:34:57,479 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 05:34:57,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 05:34:57,480 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 05:34:57,481 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 05:34:57,483 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 05:34:57,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 05:34:57,483 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 05:34:57,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 05:34:57,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 05:34:57,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 05:34:57,485 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_smtcomp.epf [2018-01-25 05:34:57,495 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 05:34:57,495 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 05:34:57,496 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 05:34:57,496 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 05:34:57,496 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 05:34:57,496 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 05:34:57,496 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 05:34:57,497 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 05:34:57,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 05:34:57,498 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 05:34:57,499 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 05:34:57,499 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 05:34:57,499 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 05:34:57,499 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 05:34:57,499 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 05:34:57,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 05:34:57,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 05:34:57,500 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 05:34:57,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 05:34:57,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 05:34:57,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 05:34:57,501 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 05:34:57,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 05:34:57,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 05:34:57,501 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 05:34:57,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 05:34:57,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 05:34:57,502 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 05:34:57,502 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 05:34:57,503 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 05:34:57,503 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 05:34:57,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 05:34:57,553 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 05:34:57,557 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 05:34:57,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 05:34:57,559 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 05:34:57,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0137_false-valid-deref.i [2018-01-25 05:34:57,774 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 05:34:57,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 05:34:57,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 05:34:57,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 05:34:57,785 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 05:34:57,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:34:57" (1/1) ... [2018-01-25 05:34:57,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6546250d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:57, skipping insertion in model container [2018-01-25 05:34:57,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 05:34:57" (1/1) ... [2018-01-25 05:34:57,807 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:34:57,847 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 05:34:57,976 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:34:57,998 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 05:34:58,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58 WrapperNode [2018-01-25 05:34:58,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 05:34:58,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 05:34:58,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 05:34:58,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 05:34:58,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... [2018-01-25 05:34:58,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 05:34:58,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 05:34:58,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 05:34:58,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 05:34:58,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 05:34:58,105 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure list_empty [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_add [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_del [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure list_add [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure list_move [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_insert [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_read [2018-01-25 05:34:58,106 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_destroy [2018-01-25 05:34:58,107 INFO L136 BoogieDeclarations]: Found implementation of procedure val_from_node [2018-01-25 05:34:58,107 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2018-01-25 05:34:58,107 INFO L136 BoogieDeclarations]: Found implementation of procedure gl_sort [2018-01-25 05:34:58,107 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 05:34:58,107 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure list_empty [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure __list_add [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure __list_del [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure list_add [2018-01-25 05:34:58,108 INFO L128 BoogieDeclarations]: Found specification of procedure list_move [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure gl_insert [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure gl_read [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure gl_destroy [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure val_from_node [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure gl_seek_max [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure gl_sort [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 05:34:58,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 05:34:58,678 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 05:34:58,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:34:58 BoogieIcfgContainer [2018-01-25 05:34:58,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 05:34:58,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 05:34:58,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 05:34:58,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 05:34:58,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 05:34:57" (1/3) ... [2018-01-25 05:34:58,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcffae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:34:58, skipping insertion in model container [2018-01-25 05:34:58,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 05:34:58" (2/3) ... [2018-01-25 05:34:58,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcffae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 05:34:58, skipping insertion in model container [2018-01-25 05:34:58,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 05:34:58" (3/3) ... [2018-01-25 05:34:58,684 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0137_false-valid-deref.i [2018-01-25 05:34:58,690 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 05:34:58,697 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-25 05:34:58,747 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 05:34:58,747 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 05:34:58,747 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 05:34:58,747 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 05:34:58,747 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 05:34:58,747 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 05:34:58,748 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 05:34:58,748 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 05:34:58,748 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 05:34:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-25 05:34:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-25 05:34:58,777 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:34:58,778 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-25 05:34:58,778 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]=== [2018-01-25 05:34:58,783 INFO L82 PathProgramCache]: Analyzing trace with hash 8574872, now seen corresponding path program 1 times [2018-01-25 05:34:58,786 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:34:58,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:58,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:34:58,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:58,846 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:34:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:34:58,896 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:34:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:34:58,946 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:34:58,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 05:34:58,946 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:34:58,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 05:34:58,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 05:34:58,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 05:34:58,961 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 3 states. [2018-01-25 05:34:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:34:59,237 INFO L93 Difference]: Finished difference Result 366 states and 406 transitions. [2018-01-25 05:34:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 05:34:59,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-25 05:34:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:34:59,253 INFO L225 Difference]: With dead ends: 366 [2018-01-25 05:34:59,253 INFO L226 Difference]: Without dead ends: 186 [2018-01-25 05:34:59,258 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 [2018-01-25 05:34:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-25 05:34:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2018-01-25 05:34:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 05:34:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 196 transitions. [2018-01-25 05:34:59,305 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 196 transitions. Word has length 4 [2018-01-25 05:34:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:34:59,305 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 196 transitions. [2018-01-25 05:34:59,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 05:34:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2018-01-25 05:34:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-25 05:34:59,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:34:59,306 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-25 05:34:59,306 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]=== [2018-01-25 05:34:59,306 INFO L82 PathProgramCache]: Analyzing trace with hash 8574873, now seen corresponding path program 1 times [2018-01-25 05:34:59,307 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:34:59,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:34:59,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,308 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:34:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:34:59,325 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:34:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:34:59,376 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:34:59,376 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 05:34:59,376 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:34:59,378 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 05:34:59,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 05:34:59,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 05:34:59,378 INFO L87 Difference]: Start difference. First operand 185 states and 196 transitions. Second operand 3 states. [2018-01-25 05:34:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:34:59,530 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2018-01-25 05:34:59,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 05:34:59,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-25 05:34:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:34:59,533 INFO L225 Difference]: With dead ends: 189 [2018-01-25 05:34:59,533 INFO L226 Difference]: Without dead ends: 187 [2018-01-25 05:34:59,534 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 [2018-01-25 05:34:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-25 05:34:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-01-25 05:34:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-25 05:34:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2018-01-25 05:34:59,553 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 4 [2018-01-25 05:34:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:34:59,553 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2018-01-25 05:34:59,554 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 05:34:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2018-01-25 05:34:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:34:59,554 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:34:59,554 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:34:59,554 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]=== [2018-01-25 05:34:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1609065266, now seen corresponding path program 1 times [2018-01-25 05:34:59,555 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:34:59,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,556 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:34:59,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,556 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:34:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:34:59,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:34:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:34:59,638 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:34:59,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:34:59,638 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:34:59,639 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:34:59,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:34:59,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:34:59,639 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 4 states. [2018-01-25 05:34:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:34:59,812 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2018-01-25 05:34:59,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:34:59,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 05:34:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:34:59,814 INFO L225 Difference]: With dead ends: 183 [2018-01-25 05:34:59,814 INFO L226 Difference]: Without dead ends: 182 [2018-01-25 05:34:59,814 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 [2018-01-25 05:34:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-25 05:34:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-01-25 05:34:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 05:34:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2018-01-25 05:34:59,831 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 16 [2018-01-25 05:34:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:34:59,831 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2018-01-25 05:34:59,831 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:34:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2018-01-25 05:34:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 05:34:59,832 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:34:59,832 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:34:59,832 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]=== [2018-01-25 05:34:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1609065267, now seen corresponding path program 1 times [2018-01-25 05:34:59,833 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:34:59,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,834 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:34:59,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:34:59,834 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:34:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:34:59,856 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:34:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:34:59,957 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:34:59,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 05:34:59,957 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:34:59,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 05:34:59,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 05:34:59,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 05:34:59,958 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand 4 states. [2018-01-25 05:35:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:00,086 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2018-01-25 05:35:00,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 05:35:00,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 05:35:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:00,088 INFO L225 Difference]: With dead ends: 182 [2018-01-25 05:35:00,088 INFO L226 Difference]: Without dead ends: 181 [2018-01-25 05:35:00,088 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 [2018-01-25 05:35:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-25 05:35:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-01-25 05:35:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-25 05:35:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2018-01-25 05:35:00,101 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 16 [2018-01-25 05:35:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:00,101 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2018-01-25 05:35:00,101 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 05:35:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2018-01-25 05:35:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 05:35:00,102 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:00,102 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:35:00,102 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]=== [2018-01-25 05:35:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -466429743, now seen corresponding path program 1 times [2018-01-25 05:35:00,103 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:00,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:00,104 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:00,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:00,104 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:00,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:00,228 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:00,262 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 05:35:00,262 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:00,263 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 05:35:00,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 05:35:00,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 05:35:00,263 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 7 states. [2018-01-25 05:35:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:00,548 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2018-01-25 05:35:00,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 05:35:00,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 05:35:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:00,550 INFO L225 Difference]: With dead ends: 190 [2018-01-25 05:35:00,550 INFO L226 Difference]: Without dead ends: 189 [2018-01-25 05:35:00,550 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 [2018-01-25 05:35:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-25 05:35:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2018-01-25 05:35:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-25 05:35:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-25 05:35:00,561 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 19 [2018-01-25 05:35:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:00,561 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-25 05:35:00,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 05:35:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-25 05:35:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 05:35:00,562 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:00,562 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 05:35:00,562 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]=== [2018-01-25 05:35:00,562 INFO L82 PathProgramCache]: Analyzing trace with hash -466429742, now seen corresponding path program 1 times [2018-01-25 05:35:00,562 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:00,563 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:00,563 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:00,563 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:00,563 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:00,581 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:00,677 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:00,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 05:35:00,678 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:00,678 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 05:35:00,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 05:35:00,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 05:35:00,679 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 7 states. [2018-01-25 05:35:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:01,033 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-25 05:35:01,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 05:35:01,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 05:35:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:01,036 INFO L225 Difference]: With dead ends: 188 [2018-01-25 05:35:01,036 INFO L226 Difference]: Without dead ends: 182 [2018-01-25 05:35:01,037 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-01-25 05:35:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-25 05:35:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-01-25 05:35:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 05:35:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2018-01-25 05:35:01,052 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 19 [2018-01-25 05:35:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:01,052 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2018-01-25 05:35:01,052 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 05:35:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2018-01-25 05:35:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 05:35:01,053 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:01,053 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] [2018-01-25 05:35:01,054 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]=== [2018-01-25 05:35:01,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1189060692, now seen corresponding path program 1 times [2018-01-25 05:35:01,054 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:01,055 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:01,055 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:01,055 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:01,055 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:01,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:01,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:01,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 05:35:01,207 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:01,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 05:35:01,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 05:35:01,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 05:35:01,208 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand 10 states. [2018-01-25 05:35:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:01,716 INFO L93 Difference]: Finished difference Result 209 states and 221 transitions. [2018-01-25 05:35:01,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-25 05:35:01,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 05:35:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:01,718 INFO L225 Difference]: With dead ends: 209 [2018-01-25 05:35:01,719 INFO L226 Difference]: Without dead ends: 208 [2018-01-25 05:35:01,719 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 [2018-01-25 05:35:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-25 05:35:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 200. [2018-01-25 05:35:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-25 05:35:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2018-01-25 05:35:01,733 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 22 [2018-01-25 05:35:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:01,734 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2018-01-25 05:35:01,734 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 05:35:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2018-01-25 05:35:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 05:35:01,734 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:01,734 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] [2018-01-25 05:35:01,735 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]=== [2018-01-25 05:35:01,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1189060691, now seen corresponding path program 1 times [2018-01-25 05:35:01,735 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:01,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:01,736 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:01,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:01,736 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:01,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:02,101 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:02,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 05:35:02,101 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:02,101 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 05:35:02,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 05:35:02,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-01-25 05:35:02,103 INFO L87 Difference]: Start difference. First operand 200 states and 219 transitions. Second operand 11 states. [2018-01-25 05:35:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:03,439 INFO L93 Difference]: Finished difference Result 373 states and 393 transitions. [2018-01-25 05:35:03,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-25 05:35:03,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-25 05:35:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:03,443 INFO L225 Difference]: With dead ends: 373 [2018-01-25 05:35:03,443 INFO L226 Difference]: Without dead ends: 372 [2018-01-25 05:35:03,444 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-01-25 05:35:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-01-25 05:35:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 296. [2018-01-25 05:35:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-01-25 05:35:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 362 transitions. [2018-01-25 05:35:03,465 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 362 transitions. Word has length 22 [2018-01-25 05:35:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:03,466 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 362 transitions. [2018-01-25 05:35:03,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 05:35:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 362 transitions. [2018-01-25 05:35:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 05:35:03,467 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:03,467 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] [2018-01-25 05:35:03,467 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]=== [2018-01-25 05:35:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1793824186, now seen corresponding path program 1 times [2018-01-25 05:35:03,467 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:03,468 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:03,468 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:03,468 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:03,469 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:03,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:03,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:03,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 05:35:03,553 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:03,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 05:35:03,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 05:35:03,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 05:35:03,554 INFO L87 Difference]: Start difference. First operand 296 states and 362 transitions. Second operand 7 states. [2018-01-25 05:35:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:03,864 INFO L93 Difference]: Finished difference Result 310 states and 376 transitions. [2018-01-25 05:35:03,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 05:35:03,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-01-25 05:35:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:03,866 INFO L225 Difference]: With dead ends: 310 [2018-01-25 05:35:03,866 INFO L226 Difference]: Without dead ends: 308 [2018-01-25 05:35:03,867 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 [2018-01-25 05:35:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-25 05:35:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 211. [2018-01-25 05:35:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-25 05:35:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 230 transitions. [2018-01-25 05:35:03,880 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 230 transitions. Word has length 23 [2018-01-25 05:35:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:03,881 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 230 transitions. [2018-01-25 05:35:03,881 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 05:35:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 230 transitions. [2018-01-25 05:35:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 05:35:03,882 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:03,882 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] [2018-01-25 05:35:03,882 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]=== [2018-01-25 05:35:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1793824187, now seen corresponding path program 1 times [2018-01-25 05:35:03,882 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:03,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:03,883 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:03,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:03,883 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:03,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:04,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:04,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 05:35:04,039 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:04,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 05:35:04,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 05:35:04,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-25 05:35:04,040 INFO L87 Difference]: Start difference. First operand 211 states and 230 transitions. Second operand 8 states. [2018-01-25 05:35:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:04,413 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2018-01-25 05:35:04,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 05:35:04,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-01-25 05:35:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:04,416 INFO L225 Difference]: With dead ends: 217 [2018-01-25 05:35:04,416 INFO L226 Difference]: Without dead ends: 215 [2018-01-25 05:35:04,416 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 [2018-01-25 05:35:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-25 05:35:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-01-25 05:35:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-25 05:35:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2018-01-25 05:35:04,430 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 23 [2018-01-25 05:35:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:04,430 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2018-01-25 05:35:04,430 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 05:35:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2018-01-25 05:35:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:35:04,431 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:04,431 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] [2018-01-25 05:35:04,431 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]=== [2018-01-25 05:35:04,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1583156317, now seen corresponding path program 1 times [2018-01-25 05:35:04,432 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:04,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:04,433 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:04,433 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:04,433 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:04,447 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:04,480 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:04,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 05:35:04,480 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:04,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 05:35:04,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 05:35:04,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 05:35:04,481 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand 5 states. [2018-01-25 05:35:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:04,760 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2018-01-25 05:35:04,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 05:35:04,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 05:35:04,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:04,762 INFO L225 Difference]: With dead ends: 211 [2018-01-25 05:35:04,763 INFO L226 Difference]: Without dead ends: 210 [2018-01-25 05:35:04,763 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 [2018-01-25 05:35:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-25 05:35:04,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-01-25 05:35:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-25 05:35:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 223 transitions. [2018-01-25 05:35:04,778 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 223 transitions. Word has length 25 [2018-01-25 05:35:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:04,778 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 223 transitions. [2018-01-25 05:35:04,778 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 05:35:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 223 transitions. [2018-01-25 05:35:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 05:35:04,779 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:04,779 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] [2018-01-25 05:35:04,779 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]=== [2018-01-25 05:35:04,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1583156318, now seen corresponding path program 1 times [2018-01-25 05:35:04,780 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:04,780 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:04,781 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:04,781 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:04,781 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:04,796 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:04,911 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:04,911 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 05:35:04,911 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:04,911 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 05:35:04,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 05:35:04,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-25 05:35:04,912 INFO L87 Difference]: Start difference. First operand 210 states and 223 transitions. Second operand 8 states. [2018-01-25 05:35:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:05,273 INFO L93 Difference]: Finished difference Result 213 states and 223 transitions. [2018-01-25 05:35:05,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 05:35:05,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-01-25 05:35:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:05,276 INFO L225 Difference]: With dead ends: 213 [2018-01-25 05:35:05,276 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 05:35:05,276 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 [2018-01-25 05:35:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 05:35:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2018-01-25 05:35:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-25 05:35:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 221 transitions. [2018-01-25 05:35:05,292 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 221 transitions. Word has length 25 [2018-01-25 05:35:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:05,293 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 221 transitions. [2018-01-25 05:35:05,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 05:35:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 221 transitions. [2018-01-25 05:35:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-25 05:35:05,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:05,294 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] [2018-01-25 05:35:05,295 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]=== [2018-01-25 05:35:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1201783090, now seen corresponding path program 1 times [2018-01-25 05:35:05,295 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:05,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:05,296 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:05,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:05,296 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:05,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:05,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:05,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 05:35:05,464 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:05,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 05:35:05,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 05:35:05,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-25 05:35:05,465 INFO L87 Difference]: Start difference. First operand 210 states and 221 transitions. Second operand 9 states. [2018-01-25 05:35:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:05,838 INFO L93 Difference]: Finished difference Result 210 states and 221 transitions. [2018-01-25 05:35:05,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 05:35:05,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-01-25 05:35:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:05,839 INFO L225 Difference]: With dead ends: 210 [2018-01-25 05:35:05,839 INFO L226 Difference]: Without dead ends: 209 [2018-01-25 05:35:05,840 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-01-25 05:35:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-01-25 05:35:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-01-25 05:35:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-25 05:35:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2018-01-25 05:35:05,853 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 41 [2018-01-25 05:35:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:05,853 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2018-01-25 05:35:05,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 05:35:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2018-01-25 05:35:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-25 05:35:05,854 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:05,855 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] [2018-01-25 05:35:05,855 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]=== [2018-01-25 05:35:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1201783091, now seen corresponding path program 1 times [2018-01-25 05:35:05,855 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:05,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:05,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:05,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:05,856 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:05,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:06,198 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 05:35:06,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 05:35:06,198 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 05:35:06,199 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 05:35:06,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 05:35:06,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-01-25 05:35:06,199 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand 11 states. [2018-01-25 05:35:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 05:35:06,591 INFO L93 Difference]: Finished difference Result 209 states and 220 transitions. [2018-01-25 05:35:06,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 05:35:06,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-01-25 05:35:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 05:35:06,593 INFO L225 Difference]: With dead ends: 209 [2018-01-25 05:35:06,593 INFO L226 Difference]: Without dead ends: 208 [2018-01-25 05:35:06,594 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-01-25 05:35:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-25 05:35:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-01-25 05:35:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-25 05:35:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 219 transitions. [2018-01-25 05:35:06,618 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 219 transitions. Word has length 41 [2018-01-25 05:35:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 05:35:06,618 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 219 transitions. [2018-01-25 05:35:06,618 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 05:35:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 219 transitions. [2018-01-25 05:35:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-25 05:35:06,620 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 05:35:06,620 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] [2018-01-25 05:35:06,620 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]=== [2018-01-25 05:35:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash 856902849, now seen corresponding path program 1 times [2018-01-25 05:35:06,621 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 05:35:06,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:06,626 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 05:35:06,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 05:35:06,626 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 05:35:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 05:35:06,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 05:35:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 05:35:07,133 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 05:35:07,133 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 05:35:07,134 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-01-25 05:35:07,135 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] [2018-01-25 05:35:07,183 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 05:35:07,183 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