java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:58:11,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:58:11,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:58:11,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:58:11,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:58:11,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:58:11,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:58:11,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:58:11,609 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:58:11,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:58:11,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:58:11,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:58:11,618 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:58:11,619 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:58:11,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:58:11,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:58:11,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:58:11,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:58:11,637 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:58:11,639 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:58:11,640 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:58:11,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:58:11,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:58:11,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:58:11,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:58:11,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:58:11,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:58:11,651 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:58:11,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:58:11,657 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:58:11,657 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:58:11,658 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:58:11,658 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:58:11,658 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:58:11,660 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:58:11,661 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:58:11,661 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:58:11,677 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:58:11,678 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:58:11,679 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:58:11,679 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:58:11,679 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:58:11,679 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:58:11,679 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:58:11,680 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:58:11,680 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:58:11,680 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:58:11,680 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:58:11,680 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:58:11,681 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:58:11,681 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:58:11,682 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:58:11,682 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:58:11,682 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:58:11,682 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:58:11,682 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:58:11,683 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:58:11,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:58:11,683 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:58:11,683 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:58:11,683 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:58:11,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:58:11,684 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:58:11,684 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:58:11,684 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:58:11,684 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:58:11,685 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:58:11,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:58:11,685 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:58:11,685 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:58:11,685 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:58:11,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:58:11,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:58:11,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:58:11,753 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:58:11,753 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:58:11,754 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-11-07 12:58:11,822 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304402884/4b808219171a41658b288b57ac15592b/FLAG279079510 [2018-11-07 12:58:12,469 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:58:12,472 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-11-07 12:58:12,492 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304402884/4b808219171a41658b288b57ac15592b/FLAG279079510 [2018-11-07 12:58:12,511 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304402884/4b808219171a41658b288b57ac15592b [2018-11-07 12:58:12,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:58:12,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:58:12,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:58:12,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:58:12,529 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:58:12,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:12" (1/1) ... [2018-11-07 12:58:12,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2964f187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:12, skipping insertion in model container [2018-11-07 12:58:12,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:12" (1/1) ... [2018-11-07 12:58:12,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:58:12,651 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:58:13,437 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:58:13,442 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:58:13,691 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:58:13,715 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:58:13,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13 WrapperNode [2018-11-07 12:58:13,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:58:13,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:58:13,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:58:13,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:58:13,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:13,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:13,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:58:13,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:58:13,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:58:13,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:58:13,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:13,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:13,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:13,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:14,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:14,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:14,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... [2018-11-07 12:58:14,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:58:14,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:58:14,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:58:14,067 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:58:14,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (1/1) ... No working directory specified, using /storage/repos/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 [2018-11-07 12:58:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:58:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:58:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:58:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:58:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:58:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:58:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:58:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:58:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:58:18,681 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:58:18,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:18 BoogieIcfgContainer [2018-11-07 12:58:18,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:58:18,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:58:18,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:58:18,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:58:18,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:58:12" (1/3) ... [2018-11-07 12:58:18,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:18, skipping insertion in model container [2018-11-07 12:58:18,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:13" (2/3) ... [2018-11-07 12:58:18,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:18, skipping insertion in model container [2018-11-07 12:58:18,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:18" (3/3) ... [2018-11-07 12:58:18,691 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11_true-unreach-call.c [2018-11-07 12:58:18,702 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:58:18,713 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:58:18,732 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:58:18,781 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:58:18,781 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:58:18,782 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:58:18,782 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:58:18,782 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:58:18,782 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:58:18,782 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:58:18,782 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:58:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 12:58:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 12:58:18,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:18,855 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:18,861 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:18,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1813715753, now seen corresponding path program 1 times [2018-11-07 12:58:18,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:18,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:18,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:18,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:18,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:19,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:19,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:58:19,882 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:19,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:58:19,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:58:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:58:19,904 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 12:58:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:22,091 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-11-07 12:58:22,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:58:22,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-11-07 12:58:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:22,120 INFO L225 Difference]: With dead ends: 855 [2018-11-07 12:58:22,120 INFO L226 Difference]: Without dead ends: 541 [2018-11-07 12:58:22,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:58:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-11-07 12:58:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-11-07 12:58:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-11-07 12:58:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-11-07 12:58:22,223 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 200 [2018-11-07 12:58:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:22,224 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-11-07 12:58:22,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:58:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-11-07 12:58:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 12:58:22,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:22,235 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:22,235 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:22,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash 86742928, now seen corresponding path program 1 times [2018-11-07 12:58:22,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:22,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:22,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:22,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:22,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:22,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:22,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:58:22,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:22,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:58:22,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:58:22,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:58:22,603 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-11-07 12:58:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:26,357 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-11-07 12:58:26,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:58:26,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-11-07 12:58:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:26,369 INFO L225 Difference]: With dead ends: 1590 [2018-11-07 12:58:26,369 INFO L226 Difference]: Without dead ends: 1069 [2018-11-07 12:58:26,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:58:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-07 12:58:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-11-07 12:58:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-11-07 12:58:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-11-07 12:58:26,432 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 210 [2018-11-07 12:58:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:26,433 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-11-07 12:58:26,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:58:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-11-07 12:58:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 12:58:26,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:26,440 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:26,440 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:26,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1017484904, now seen corresponding path program 1 times [2018-11-07 12:58:26,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:26,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:26,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:26,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:26,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:26,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:26,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:58:26,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:26,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:58:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:58:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:58:26,668 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-11-07 12:58:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:30,108 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-11-07 12:58:30,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:58:30,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-11-07 12:58:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:30,123 INFO L225 Difference]: With dead ends: 3166 [2018-11-07 12:58:30,124 INFO L226 Difference]: Without dead ends: 2148 [2018-11-07 12:58:30,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:58:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-07 12:58:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-11-07 12:58:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-11-07 12:58:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-11-07 12:58:30,218 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 211 [2018-11-07 12:58:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:30,218 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-11-07 12:58:30,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:58:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-11-07 12:58:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 12:58:30,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:30,228 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:30,228 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:30,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1009483949, now seen corresponding path program 1 times [2018-11-07 12:58:30,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:30,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:30,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:30,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:30,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:30,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:30,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:58:30,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:30,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:58:30,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:58:30,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:58:30,619 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-11-07 12:58:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:32,251 INFO L93 Difference]: Finished difference Result 6093 states and 10292 transitions. [2018-11-07 12:58:32,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:58:32,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-11-07 12:58:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:32,280 INFO L225 Difference]: With dead ends: 6093 [2018-11-07 12:58:32,280 INFO L226 Difference]: Without dead ends: 3994 [2018-11-07 12:58:32,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:58:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-11-07 12:58:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3991. [2018-11-07 12:58:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2018-11-07 12:58:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 6333 transitions. [2018-11-07 12:58:32,417 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 6333 transitions. Word has length 213 [2018-11-07 12:58:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:32,418 INFO L480 AbstractCegarLoop]: Abstraction has 3991 states and 6333 transitions. [2018-11-07 12:58:32,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:58:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 6333 transitions. [2018-11-07 12:58:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 12:58:32,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:32,435 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:32,435 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:32,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 535960129, now seen corresponding path program 1 times [2018-11-07 12:58:32,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:32,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:32,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:32,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:32,437 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:32,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:32,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 12:58:32,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:32,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:58:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:58:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:58:32,697 INFO L87 Difference]: Start difference. First operand 3991 states and 6333 transitions. Second operand 7 states. [2018-11-07 12:58:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:35,168 INFO L93 Difference]: Finished difference Result 12139 states and 21255 transitions. [2018-11-07 12:58:35,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:58:35,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-11-07 12:58:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:35,229 INFO L225 Difference]: With dead ends: 12139 [2018-11-07 12:58:35,229 INFO L226 Difference]: Without dead ends: 8154 [2018-11-07 12:58:35,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:58:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2018-11-07 12:58:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 7966. [2018-11-07 12:58:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7966 states. [2018-11-07 12:58:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 13096 transitions. [2018-11-07 12:58:35,545 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 13096 transitions. Word has length 219 [2018-11-07 12:58:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:35,546 INFO L480 AbstractCegarLoop]: Abstraction has 7966 states and 13096 transitions. [2018-11-07 12:58:35,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:58:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 13096 transitions. [2018-11-07 12:58:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 12:58:35,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:35,575 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:35,575 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:35,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:35,575 INFO L82 PathProgramCache]: Analyzing trace with hash 486898844, now seen corresponding path program 1 times [2018-11-07 12:58:35,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:35,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:35,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:35,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:35,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:35,824 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:58:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:36,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:58:36,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:58:36,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:36,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:58:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:58:36,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:58:36,230 INFO L87 Difference]: Start difference. First operand 7966 states and 13096 transitions. Second operand 6 states. [2018-11-07 12:58:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:58:38,905 INFO L93 Difference]: Finished difference Result 16547 states and 28268 transitions. [2018-11-07 12:58:38,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:58:38,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-11-07 12:58:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:58:38,960 INFO L225 Difference]: With dead ends: 16547 [2018-11-07 12:58:38,960 INFO L226 Difference]: Without dead ends: 8587 [2018-11-07 12:58:38,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:58:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2018-11-07 12:58:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8357. [2018-11-07 12:58:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8357 states. [2018-11-07 12:58:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 12585 transitions. [2018-11-07 12:58:39,233 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 12585 transitions. Word has length 220 [2018-11-07 12:58:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:58:39,234 INFO L480 AbstractCegarLoop]: Abstraction has 8357 states and 12585 transitions. [2018-11-07 12:58:39,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:58:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 12585 transitions. [2018-11-07 12:58:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 12:58:39,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:58:39,260 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:58:39,260 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:58:39,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1745842198, now seen corresponding path program 1 times [2018-11-07 12:58:39,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:58:39,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:39,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:58:39,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:58:39,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:58:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:58:39,533 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:58:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:58:39,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:58:39,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:58:39,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 12:58:39,715 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 12:58:39,796 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:58:39,797 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:58:59,431 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:58:59,433 INFO L272 AbstractInterpreter]: Visited 201 different actions 201 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 12:58:59,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:59,475 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:59:11,802 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 74.5% of their original sizes. [2018-11-07 12:59:11,803 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:59:12,836 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 12:59:12,837 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:59:12,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:59:12,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-07 12:59:12,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:59:12,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 12:59:12,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 12:59:12,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-11-07 12:59:12,839 INFO L87 Difference]: Start difference. First operand 8357 states and 12585 transitions. Second operand 21 states. [2018-11-07 13:00:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:00:20,847 INFO L93 Difference]: Finished difference Result 16918 states and 25465 transitions. [2018-11-07 13:00:20,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:00:20,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 224 [2018-11-07 13:00:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:00:20,874 INFO L225 Difference]: With dead ends: 16918 [2018-11-07 13:00:20,874 INFO L226 Difference]: Without dead ends: 8567 [2018-11-07 13:00:20,891 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2018-11-07 13:00:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8567 states. [2018-11-07 13:00:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8567 to 8565. [2018-11-07 13:00:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8565 states. [2018-11-07 13:00:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 12804 transitions. [2018-11-07 13:00:21,132 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 12804 transitions. Word has length 224 [2018-11-07 13:00:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:00:21,133 INFO L480 AbstractCegarLoop]: Abstraction has 8565 states and 12804 transitions. [2018-11-07 13:00:21,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 13:00:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 12804 transitions. [2018-11-07 13:00:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-07 13:00:21,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:00:21,159 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:00:21,160 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:00:21,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:00:21,160 INFO L82 PathProgramCache]: Analyzing trace with hash 361647275, now seen corresponding path program 1 times [2018-11-07 13:00:21,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:00:21,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:00:21,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:00:21,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:00:21,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:00:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:00:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:00:21,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:00:21,489 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:00:21,489 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-07 13:00:21,490 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:00:21,506 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:00:21,506 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:01:47,577 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 13:01:47,578 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 13:01:47,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:01:47,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 13:01:47,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:01:47,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 13:01:47,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:01:47,612 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 13:01:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:01:47,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 13:01:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 13:01:47,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 13:01:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 13:01:48,073 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:01:48,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-11-07 13:01:48,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:01:48,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:01:48,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:01:48,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-07 13:01:48,075 INFO L87 Difference]: Start difference. First operand 8565 states and 12804 transitions. Second operand 3 states. [2018-11-07 13:01:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:01:48,899 INFO L93 Difference]: Finished difference Result 16910 states and 25379 transitions. [2018-11-07 13:01:48,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:01:48,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2018-11-07 13:01:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:01:48,926 INFO L225 Difference]: With dead ends: 16910 [2018-11-07 13:01:48,926 INFO L226 Difference]: Without dead ends: 8559 [2018-11-07 13:01:48,944 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-07 13:01:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8559 states. [2018-11-07 13:01:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8559 to 8559. [2018-11-07 13:01:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8559 states. [2018-11-07 13:01:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 12790 transitions. [2018-11-07 13:01:49,122 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 12790 transitions. Word has length 233 [2018-11-07 13:01:49,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:01:49,123 INFO L480 AbstractCegarLoop]: Abstraction has 8559 states and 12790 transitions. [2018-11-07 13:01:49,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:01:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 12790 transitions. [2018-11-07 13:01:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-07 13:01:49,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:01:49,151 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:01:49,151 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:01:49,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:01:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash 151483179, now seen corresponding path program 1 times [2018-11-07 13:01:49,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:01:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:01:49,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:01:49,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:01:49,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:01:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:01:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:01:49,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:01:49,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:01:49,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-07 13:01:49,715 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:01:49,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:01:49,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown