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_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:01:50,666 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:01:50,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:01:50,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:01:50,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:01:50,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:01:50,691 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:01:50,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:01:50,696 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:01:50,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:01:50,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:01:50,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:01:50,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:01:50,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:01:50,712 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:01:50,713 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:01:50,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:01:50,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:01:50,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:01:50,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:01:50,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:01:50,737 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:01:50,740 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:01:50,740 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:01:50,744 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:01:50,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:01:50,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:01:50,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:01:50,751 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:01:50,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:01:50,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:01:50,756 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:01:50,757 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:01:50,757 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:01:50,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:01:50,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:01:50,759 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 13:01:50,783 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:01:50,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:01:50,784 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:01:50,785 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:01:50,785 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:01:50,785 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:01:50,786 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:01:50,786 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:01:50,786 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:01:50,786 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:01:50,787 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:01:50,787 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:01:50,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:01:50,788 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:01:50,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:01:50,788 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:01:50,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:01:50,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:01:50,789 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:01:50,789 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:01:50,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:01:50,790 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:01:50,790 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:01:50,790 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:01:50,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:01:50,791 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:01:50,791 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:01:50,791 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:01:50,792 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:01:50,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:01:50,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:01:50,792 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:01:50,793 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:01:50,793 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:01:50,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:01:50,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:01:50,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:01:50,893 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:01:50,893 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:01:50,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label16_true-unreach-call.c [2018-11-07 13:01:50,975 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d100b85/9eb4dbaa3571464aa5fc3645c9b9b39e/FLAG005e1be28 [2018-11-07 13:01:51,735 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:01:51,736 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label16_true-unreach-call.c [2018-11-07 13:01:51,758 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d100b85/9eb4dbaa3571464aa5fc3645c9b9b39e/FLAG005e1be28 [2018-11-07 13:01:51,778 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d100b85/9eb4dbaa3571464aa5fc3645c9b9b39e [2018-11-07 13:01:51,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:01:51,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:01:51,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:01:51,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:01:51,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:01:51,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:51" (1/1) ... [2018-11-07 13:01:51,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:51, skipping insertion in model container [2018-11-07 13:01:51,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:51" (1/1) ... [2018-11-07 13:01:51,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:01:51,919 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:01:52,741 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:01:52,749 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:01:53,022 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:01:53,052 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:01:53,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53 WrapperNode [2018-11-07 13:01:53,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:01:53,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:01:53,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:01:53,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:01:53,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:01:53,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:01:53,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:01:53,241 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:01:53,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (1/1) ... [2018-11-07 13:01:53,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:01:53,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:01:53,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:01:53,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:01:53,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (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 13:01:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:01:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:01:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:01:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:01:53,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:01:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:01:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:01:53,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:01:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:01:58,610 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:01:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:58 BoogieIcfgContainer [2018-11-07 13:01:58,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:01:58,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:01:58,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:01:58,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:01:58,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:01:51" (1/3) ... [2018-11-07 13:01:58,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:58, skipping insertion in model container [2018-11-07 13:01:58,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53" (2/3) ... [2018-11-07 13:01:58,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:58, skipping insertion in model container [2018-11-07 13:01:58,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:58" (3/3) ... [2018-11-07 13:01:58,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label16_true-unreach-call.c [2018-11-07 13:01:58,632 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:01:58,642 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:01:58,662 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:01:58,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:01:58,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:01:58,708 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:01:58,708 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:01:58,708 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:01:58,708 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:01:58,709 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:01:58,709 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:01:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 13:01:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 13:01:58,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:01:58,764 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] [2018-11-07 13:01:58,767 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:01:58,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:01:58,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1790401401, now seen corresponding path program 1 times [2018-11-07 13:01:58,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:01:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:01:58,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:01:58,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:01:58,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:01:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:01:59,881 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 13:01:59,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:01:59,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:01:59,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:01:59,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:01:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:01:59,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:01:59,914 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 13:02:02,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:02,101 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-07 13:02:02,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:02:02,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2018-11-07 13:02:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:02,128 INFO L225 Difference]: With dead ends: 848 [2018-11-07 13:02:02,128 INFO L226 Difference]: Without dead ends: 534 [2018-11-07 13:02:02,136 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-07 13:02:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-07 13:02:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-07 13:02:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-07 13:02:02,264 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 172 [2018-11-07 13:02:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:02,265 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-07 13:02:02,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:02:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-07 13:02:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 13:02:02,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:02,286 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] [2018-11-07 13:02:02,286 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:02,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1193307901, now seen corresponding path program 1 times [2018-11-07 13:02:02,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:02,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:02,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:02,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:02,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:02,832 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 13:02:02,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:02,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:02:02,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:02,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:02:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:02:02,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:02,838 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-07 13:02:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:04,942 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-11-07 13:02:04,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:02:04,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2018-11-07 13:02:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:04,953 INFO L225 Difference]: With dead ends: 1494 [2018-11-07 13:02:04,954 INFO L226 Difference]: Without dead ends: 968 [2018-11-07 13:02:04,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-07 13:02:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-11-07 13:02:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-11-07 13:02:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-11-07 13:02:05,000 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 185 [2018-11-07 13:02:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:05,001 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-11-07 13:02:05,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:02:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-11-07 13:02:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 13:02:05,007 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:05,007 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 13:02:05,008 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:05,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash 501674269, now seen corresponding path program 1 times [2018-11-07 13:02:05,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:05,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:05,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:05,010 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:05,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:02:05,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:02:05,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-07 13:02:05,303 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [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], [837], [839], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:02:05,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:02:05,367 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:02:25,442 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:02:25,444 INFO L272 AbstractInterpreter]: Visited 173 different actions 173 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 13:02:25,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:25,456 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:02:38,687 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 71.97% of their original sizes. [2018-11-07 13:02:38,687 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:02:39,360 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-11-07 13:02:39,360 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:02:39,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:02:39,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 13:02:39,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:39,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 13:02:39,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 13:02:39,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-11-07 13:02:39,365 INFO L87 Difference]: Start difference. First operand 952 states and 1529 transitions. Second operand 16 states. [2018-11-07 13:03:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:58,129 INFO L93 Difference]: Finished difference Result 2108 states and 3387 transitions. [2018-11-07 13:03:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:03:58,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 196 [2018-11-07 13:03:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:58,137 INFO L225 Difference]: With dead ends: 2108 [2018-11-07 13:03:58,137 INFO L226 Difference]: Without dead ends: 1162 [2018-11-07 13:03:58,141 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-07 13:03:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-11-07 13:03:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-11-07 13:03:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-11-07 13:03:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1747 transitions. [2018-11-07 13:03:58,175 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1747 transitions. Word has length 196 [2018-11-07 13:03:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:58,176 INFO L480 AbstractCegarLoop]: Abstraction has 1160 states and 1747 transitions. [2018-11-07 13:03:58,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 13:03:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1747 transitions. [2018-11-07 13:03:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 13:03:58,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:58,182 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 13:03:58,182 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:58,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:58,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1911484622, now seen corresponding path program 1 times [2018-11-07 13:03:58,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:58,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:58,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:58,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:58,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:58,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:03:58,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:03:58,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-07 13:03:58,584 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [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], [837], [839], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:03:58,595 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:03:58,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:05:32,703 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 13:05:32,704 INFO L272 AbstractInterpreter]: Visited 177 different actions 346 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 13:05:32,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:05:32,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 13:05:32,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:05:32,716 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 13:05:32,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:05:32,745 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 13:05:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:05:32,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 13:05:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:05:33,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 13:05:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:05:34,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 13:05:34,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-07 13:05:34,103 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 13:05:34,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 13:05:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 13:05:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-07 13:05:34,104 INFO L87 Difference]: Start difference. First operand 1160 states and 1747 transitions. Second operand 9 states. [2018-11-07 13:05:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:05:46,470 INFO L93 Difference]: Finished difference Result 9426 states and 19261 transitions. [2018-11-07 13:05:46,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 13:05:46,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2018-11-07 13:05:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:05:46,582 INFO L225 Difference]: With dead ends: 9426 [2018-11-07 13:05:46,583 INFO L226 Difference]: Without dead ends: 8480 [2018-11-07 13:05:46,627 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 13:05:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2018-11-07 13:05:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 8113. [2018-11-07 13:05:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8113 states. [2018-11-07 13:05:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12545 transitions. [2018-11-07 13:05:47,033 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12545 transitions. Word has length 205 [2018-11-07 13:05:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:05:47,034 INFO L480 AbstractCegarLoop]: Abstraction has 8113 states and 12545 transitions. [2018-11-07 13:05:47,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 13:05:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12545 transitions. [2018-11-07 13:05:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 13:05:47,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:05:47,075 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 13:05:47,075 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:05:47,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:05:47,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1256463911, now seen corresponding path program 1 times [2018-11-07 13:05:47,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:05:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:05:47,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:05:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:05:47,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:05:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:05:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:05:47,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:05:47,415 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:05:47,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-07 13:05:47,416 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [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], [837], [839], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:05:47,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:05:47,429 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