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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:58:04,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:58:04,754 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:58:04,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:58:04,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:58:04,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:58:04,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:58:04,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:58:04,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:58:04,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:58:04,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:58:04,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:58:04,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:58:04,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:58:04,786 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:58:04,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:58:04,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:58:04,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:58:04,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:58:04,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:58:04,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:58:04,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:58:04,798 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:58:04,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:58:04,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:58:04,800 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:58:04,801 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:58:04,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:58:04,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:58:04,804 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:58:04,804 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:58:04,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 16:58:04,805 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 16:58:04,805 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 16:58:04,806 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 16:58:04,807 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 16:58:04,807 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-LIM.epf [2018-11-07 16:58:04,831 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:58:04,832 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:58:04,833 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:58:04,833 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:58:04,833 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:58:04,833 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:58:04,834 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 16:58:04,834 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:58:04,834 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:58:04,834 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:58:04,834 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:58:04,835 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:58:04,835 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:58:04,835 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:58:04,836 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:58:04,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:58:04,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:58:04,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:58:04,836 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:58:04,837 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:58:04,837 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:58:04,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:58:04,837 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:58:04,837 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:58:04,838 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:58:04,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:58:04,838 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:58:04,838 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:58:04,838 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:58:04,839 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:58:04,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:58:04,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:58:04,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:58:04,922 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:58:04,922 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:58:04,923 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-11-07 16:58:04,991 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcd15dae/aea4a4def45e4473a0cba7fc3a0fd35f/FLAG502bf7b7a [2018-11-07 16:58:05,651 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:58:05,652 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-11-07 16:58:05,677 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcd15dae/aea4a4def45e4473a0cba7fc3a0fd35f/FLAG502bf7b7a [2018-11-07 16:58:05,697 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcd15dae/aea4a4def45e4473a0cba7fc3a0fd35f [2018-11-07 16:58:05,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:58:05,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:58:05,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:58:05,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:58:05,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:58:05,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:58:05" (1/1) ... [2018-11-07 16:58:05,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:05, skipping insertion in model container [2018-11-07 16:58:05,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:58:05" (1/1) ... [2018-11-07 16:58:05,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:58:05,845 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:58:06,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:58:06,659 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:58:07,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:58:07,106 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:58:07,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07 WrapperNode [2018-11-07 16:58:07,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:58:07,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:58:07,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:58:07,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:58:07,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:58:07,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:58:07,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:58:07,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:58:07,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (1/1) ... [2018-11-07 16:58:07,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:58:07,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:58:07,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:58:07,533 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:58:07,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (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 16:58:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 16:58:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:58:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:58:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 16:58:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 16:58:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:58:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:58:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:58:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:58:12,765 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:58:12,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:58:12 BoogieIcfgContainer [2018-11-07 16:58:12,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:58:12,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:58:12,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:58:12,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:58:12,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:58:05" (1/3) ... [2018-11-07 16:58:12,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843be26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:58:12, skipping insertion in model container [2018-11-07 16:58:12,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:07" (2/3) ... [2018-11-07 16:58:12,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843be26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:58:12, skipping insertion in model container [2018-11-07 16:58:12,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:58:12" (3/3) ... [2018-11-07 16:58:12,783 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09_false-unreach-call.c [2018-11-07 16:58:12,794 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:58:12,806 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:58:12,826 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:58:12,878 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:58:12,879 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:58:12,879 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:58:12,879 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:58:12,879 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:58:12,879 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:58:12,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:58:12,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:58:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 16:58:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 16:58:12,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:12,952 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] [2018-11-07 16:58:12,955 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:12,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:12,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1379578932, now seen corresponding path program 1 times [2018-11-07 16:58:12,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:13,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:13,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:13,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:13,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:13,881 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:58:14,234 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 16:58:14,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:14,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 16:58:14,238 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:14,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 16:58:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 16:58:14,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 16:58:14,267 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 16:58:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:17,439 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-11-07 16:58:17,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 16:58:17,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-07 16:58:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:17,466 INFO L225 Difference]: With dead ends: 1054 [2018-11-07 16:58:17,466 INFO L226 Difference]: Without dead ends: 736 [2018-11-07 16:58:17,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 16:58:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-11-07 16:58:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-11-07 16:58:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-11-07 16:58:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-11-07 16:58:17,574 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 155 [2018-11-07 16:58:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:17,575 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-11-07 16:58:17,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 16:58:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-11-07 16:58:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-07 16:58:17,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:17,636 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] [2018-11-07 16:58:17,636 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:17,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash -211363835, now seen corresponding path program 1 times [2018-11-07 16:58:17,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:17,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:17,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:17,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:17,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:17,985 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 16:58:17,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:17,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 16:58:17,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:17,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 16:58:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 16:58:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:58:17,992 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-11-07 16:58:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:21,266 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-11-07 16:58:21,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 16:58:21,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-11-07 16:58:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:21,280 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 16:58:21,280 INFO L226 Difference]: Without dead ends: 1068 [2018-11-07 16:58:21,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:58:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-11-07 16:58:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-11-07 16:58:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-11-07 16:58:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-11-07 16:58:21,367 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 165 [2018-11-07 16:58:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:21,367 INFO L480 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-11-07 16:58:21,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:58:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-11-07 16:58:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-07 16:58:21,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:21,374 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] [2018-11-07 16:58:21,374 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:21,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:21,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1423519688, now seen corresponding path program 1 times [2018-11-07 16:58:21,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:21,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:21,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:21,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:21,377 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:21,657 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 16:58:21,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:21,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 16:58:21,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:21,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 16:58:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 16:58:21,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:58:21,661 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-11-07 16:58:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:24,108 INFO L93 Difference]: Finished difference Result 2908 states and 5067 transitions. [2018-11-07 16:58:24,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 16:58:24,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-11-07 16:58:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:24,129 INFO L225 Difference]: With dead ends: 2908 [2018-11-07 16:58:24,130 INFO L226 Difference]: Without dead ends: 1889 [2018-11-07 16:58:24,135 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 16:58:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-11-07 16:58:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1869. [2018-11-07 16:58:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-11-07 16:58:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 3142 transitions. [2018-11-07 16:58:24,197 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 3142 transitions. Word has length 168 [2018-11-07 16:58:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:24,197 INFO L480 AbstractCegarLoop]: Abstraction has 1869 states and 3142 transitions. [2018-11-07 16:58:24,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 16:58:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 3142 transitions. [2018-11-07 16:58:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 16:58:24,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:24,205 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 16:58:24,205 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:24,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:24,206 INFO L82 PathProgramCache]: Analyzing trace with hash 634374037, now seen corresponding path program 1 times [2018-11-07 16:58:24,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:24,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:24,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:24,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:24,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:58:24,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:24,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 16:58:24,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:24,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 16:58:24,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 16:58:24,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:58:24,412 INFO L87 Difference]: Start difference. First operand 1869 states and 3142 transitions. Second operand 6 states. [2018-11-07 16:58:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:27,698 INFO L93 Difference]: Finished difference Result 5741 states and 10710 transitions. [2018-11-07 16:58:27,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 16:58:27,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-11-07 16:58:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:27,735 INFO L225 Difference]: With dead ends: 5741 [2018-11-07 16:58:27,736 INFO L226 Difference]: Without dead ends: 3878 [2018-11-07 16:58:27,744 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:58:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2018-11-07 16:58:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3764. [2018-11-07 16:58:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3764 states. [2018-11-07 16:58:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6536 transitions. [2018-11-07 16:58:27,895 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6536 transitions. Word has length 173 [2018-11-07 16:58:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:27,895 INFO L480 AbstractCegarLoop]: Abstraction has 3764 states and 6536 transitions. [2018-11-07 16:58:27,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:58:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6536 transitions. [2018-11-07 16:58:27,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 16:58:27,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:27,908 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] [2018-11-07 16:58:27,908 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:27,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:27,908 INFO L82 PathProgramCache]: Analyzing trace with hash 279397812, now seen corresponding path program 1 times [2018-11-07 16:58:27,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:27,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:27,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:27,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:27,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:28,131 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 16:58:28,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:28,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 16:58:28,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:28,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 16:58:28,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 16:58:28,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:58:28,133 INFO L87 Difference]: Start difference. First operand 3764 states and 6536 transitions. Second operand 7 states. [2018-11-07 16:58:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:30,333 INFO L93 Difference]: Finished difference Result 11468 states and 22298 transitions. [2018-11-07 16:58:30,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:58:30,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2018-11-07 16:58:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:30,400 INFO L225 Difference]: With dead ends: 11468 [2018-11-07 16:58:30,400 INFO L226 Difference]: Without dead ends: 7710 [2018-11-07 16:58:30,419 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 16:58:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2018-11-07 16:58:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7523. [2018-11-07 16:58:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2018-11-07 16:58:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 13613 transitions. [2018-11-07 16:58:30,749 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 13613 transitions. Word has length 174 [2018-11-07 16:58:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:30,749 INFO L480 AbstractCegarLoop]: Abstraction has 7523 states and 13613 transitions. [2018-11-07 16:58:30,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 16:58:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 13613 transitions. [2018-11-07 16:58:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 16:58:30,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:30,775 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 16:58:30,775 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:30,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:30,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1038337502, now seen corresponding path program 1 times [2018-11-07 16:58:30,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:30,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:30,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:30,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:30,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:31,055 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 16:58:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:58:31,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:58:31,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 16:58:31,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:31,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 16:58:31,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 16:58:31,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:58:31,170 INFO L87 Difference]: Start difference. First operand 7523 states and 13613 transitions. Second operand 6 states. [2018-11-07 16:58:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:58:33,971 INFO L93 Difference]: Finished difference Result 23479 states and 46249 transitions. [2018-11-07 16:58:33,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:58:33,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-11-07 16:58:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:58:34,074 INFO L225 Difference]: With dead ends: 23479 [2018-11-07 16:58:34,074 INFO L226 Difference]: Without dead ends: 15962 [2018-11-07 16:58:34,121 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:58:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2018-11-07 16:58:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 15714. [2018-11-07 16:58:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15714 states. [2018-11-07 16:58:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 27871 transitions. [2018-11-07 16:58:34,661 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 27871 transitions. Word has length 180 [2018-11-07 16:58:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:58:34,662 INFO L480 AbstractCegarLoop]: Abstraction has 15714 states and 27871 transitions. [2018-11-07 16:58:34,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:58:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 27871 transitions. [2018-11-07 16:58:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 16:58:34,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:58:34,708 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-11-07 16:58:34,708 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:58:34,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:34,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1657030729, now seen corresponding path program 1 times [2018-11-07 16:58:34,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:58:34,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:34,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:58:34,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:58:34,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:58:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:58:34,974 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:58:35,341 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 16:58:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 16:58:35,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:58:35,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:58:35,696 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-11-07 16:58:35,705 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 16:58:35,788 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:58:35,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:58:37,231 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:58:37,233 INFO L272 AbstractInterpreter]: Visited 156 different actions 156 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 16:58:37,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:58:37,253 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:58:38,543 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 70.13% of their original sizes. [2018-11-07 16:58:38,544 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:58:39,545 INFO L415 sIntCurrentIteration]: We unified 181 AI predicates to 181 [2018-11-07 16:58:39,546 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:58:39,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:58:39,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-11-07 16:58:39,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:58:39,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 16:58:39,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 16:58:39,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-11-07 16:58:39,548 INFO L87 Difference]: Start difference. First operand 15714 states and 27871 transitions. Second operand 22 states. [2018-11-07 16:59:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:59:30,230 INFO L93 Difference]: Finished difference Result 31632 states and 56068 transitions. [2018-11-07 16:59:30,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 16:59:30,230 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 182 [2018-11-07 16:59:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:59:30,304 INFO L225 Difference]: With dead ends: 31632 [2018-11-07 16:59:30,304 INFO L226 Difference]: Without dead ends: 15924 [2018-11-07 16:59:30,351 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2018-11-07 16:59:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2018-11-07 16:59:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15922. [2018-11-07 16:59:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15922 states. [2018-11-07 16:59:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 28089 transitions. [2018-11-07 16:59:31,044 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 28089 transitions. Word has length 182 [2018-11-07 16:59:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:59:31,044 INFO L480 AbstractCegarLoop]: Abstraction has 15922 states and 28089 transitions. [2018-11-07 16:59:31,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 16:59:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 28089 transitions. [2018-11-07 16:59:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 16:59:31,089 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:59:31,089 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2018-11-07 16:59:31,089 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:59:31,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:31,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2081143308, now seen corresponding path program 1 times [2018-11-07 16:59:31,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:59:31,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:31,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:59:31,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:31,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:59:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:59:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 16:59:31,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:59:31,597 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:59:31,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-11-07 16:59:31,598 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 16:59:31,609 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:59:31,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:59:33,292 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:59:33,292 INFO L272 AbstractInterpreter]: Visited 160 different actions 314 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 16:59:33,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:33,333 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:59:34,679 INFO L227 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 73.09% of their original sizes. [2018-11-07 16:59:34,680 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:59:36,854 INFO L415 sIntCurrentIteration]: We unified 193 AI predicates to 193 [2018-11-07 16:59:36,855 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:59:36,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:59:36,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [6] total 32 [2018-11-07 16:59:36,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:59:36,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-07 16:59:36,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-07 16:59:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2018-11-07 16:59:36,858 INFO L87 Difference]: Start difference. First operand 15922 states and 28089 transitions. Second operand 28 states. [2018-11-07 17:00:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:00:21,073 INFO L93 Difference]: Finished difference Result 32059 states and 56678 transitions. [2018-11-07 17:00:21,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 17:00:21,073 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 194 [2018-11-07 17:00:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:00:21,133 INFO L225 Difference]: With dead ends: 32059 [2018-11-07 17:00:21,133 INFO L226 Difference]: Without dead ends: 16351 [2018-11-07 17:00:21,159 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 151 SyntacticMatches, 16 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=334, Invalid=1472, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 17:00:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16351 states. [2018-11-07 17:00:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16351 to 16341. [2018-11-07 17:00:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16341 states. [2018-11-07 17:00:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16341 states to 16341 states and 28544 transitions. [2018-11-07 17:00:21,545 INFO L78 Accepts]: Start accepts. Automaton has 16341 states and 28544 transitions. Word has length 194 [2018-11-07 17:00:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:00:21,546 INFO L480 AbstractCegarLoop]: Abstraction has 16341 states and 28544 transitions. [2018-11-07 17:00:21,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-07 17:00:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16341 states and 28544 transitions. [2018-11-07 17:00:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 17:00:21,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:00:21,590 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:00:21,591 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:00:21,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1733760794, now seen corresponding path program 1 times [2018-11-07 17:00:21,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:00:21,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:21,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:00:21,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:21,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:00:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:00:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:00:22,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:00:22,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:00:22,077 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 17:00:22,077 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:00:22,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:00:22,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:00:23,706 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:00:23,706 INFO L272 AbstractInterpreter]: Visited 159 different actions 314 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 17:00:23,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:23,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:00:24,929 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 70.07% of their original sizes. [2018-11-07 17:00:24,930 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:00:25,220 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 17:00:25,221 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:00:25,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:00:25,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 17:00:25,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:00:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 17:00:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 17:00:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-07 17:00:25,223 INFO L87 Difference]: Start difference. First operand 16341 states and 28544 transitions. Second operand 18 states. [2018-11-07 17:00:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:00:55,757 INFO L93 Difference]: Finished difference Result 40295 states and 71417 transitions. [2018-11-07 17:00:55,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:00:55,757 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 195 [2018-11-07 17:00:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:00:55,840 INFO L225 Difference]: With dead ends: 40295 [2018-11-07 17:00:55,840 INFO L226 Difference]: Without dead ends: 24587 [2018-11-07 17:00:55,873 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-11-07 17:00:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24587 states. [2018-11-07 17:00:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24587 to 24578. [2018-11-07 17:00:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24578 states. [2018-11-07 17:00:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 39156 transitions. [2018-11-07 17:00:56,367 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 39156 transitions. Word has length 195 [2018-11-07 17:00:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:00:56,368 INFO L480 AbstractCegarLoop]: Abstraction has 24578 states and 39156 transitions. [2018-11-07 17:00:56,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 17:00:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 39156 transitions. [2018-11-07 17:00:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-07 17:00:56,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:00:56,390 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, 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] [2018-11-07 17:00:56,390 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:00:56,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:56,390 INFO L82 PathProgramCache]: Analyzing trace with hash -960690602, now seen corresponding path program 1 times [2018-11-07 17:00:56,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:00:56,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:56,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:00:56,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:56,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:00:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:00:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:00:56,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:00:56,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:00:56,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:00:56,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:00:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:00:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:00:56,713 INFO L87 Difference]: Start difference. First operand 24578 states and 39156 transitions. Second operand 3 states. [2018-11-07 17:00:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:00:58,581 INFO L93 Difference]: Finished difference Result 67522 states and 112612 transitions. [2018-11-07 17:00:58,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:00:58,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-11-07 17:00:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:00:58,725 INFO L225 Difference]: With dead ends: 67522 [2018-11-07 17:00:58,726 INFO L226 Difference]: Without dead ends: 43577 [2018-11-07 17:00:58,806 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 17:00:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43577 states. [2018-11-07 17:00:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43577 to 43523. [2018-11-07 17:00:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43523 states. [2018-11-07 17:00:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43523 states to 43523 states and 67718 transitions. [2018-11-07 17:00:59,688 INFO L78 Accepts]: Start accepts. Automaton has 43523 states and 67718 transitions. Word has length 203 [2018-11-07 17:00:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:00:59,689 INFO L480 AbstractCegarLoop]: Abstraction has 43523 states and 67718 transitions. [2018-11-07 17:00:59,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:00:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43523 states and 67718 transitions. [2018-11-07 17:00:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 17:00:59,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:00:59,728 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:59,729 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:00:59,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash 937800607, now seen corresponding path program 1 times [2018-11-07 17:00:59,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:00:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:59,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:00:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:59,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:00:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:00,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:00,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:01:00,237 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-11-07 17:01:00,237 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:01:00,244 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:01:00,244 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:01:02,818 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:01:02,818 INFO L272 AbstractInterpreter]: Visited 161 different actions 480 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 17:01:02,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:02,828 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:01:02,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:02,828 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 17:01:02,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:02,839 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:01:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:03,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:01:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-07 17:01:03,311 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:01:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-07 17:01:03,568 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:01:03,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 17:01:03,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:01:03,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:01:03,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:01:03,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:01:03,569 INFO L87 Difference]: Start difference. First operand 43523 states and 67718 transitions. Second operand 3 states. [2018-11-07 17:01:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:01:07,595 INFO L93 Difference]: Finished difference Result 115947 states and 183083 transitions. [2018-11-07 17:01:07,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:01:07,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-11-07 17:01:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:01:08,003 INFO L225 Difference]: With dead ends: 115947 [2018-11-07 17:01:08,003 INFO L226 Difference]: Without dead ends: 73476 [2018-11-07 17:01:08,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 440 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:01:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73476 states. [2018-11-07 17:01:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73476 to 73160. [2018-11-07 17:01:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73160 states. [2018-11-07 17:01:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73160 states to 73160 states and 113537 transitions. [2018-11-07 17:01:11,209 INFO L78 Accepts]: Start accepts. Automaton has 73160 states and 113537 transitions. Word has length 221 [2018-11-07 17:01:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:01:11,209 INFO L480 AbstractCegarLoop]: Abstraction has 73160 states and 113537 transitions. [2018-11-07 17:01:11,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:01:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 73160 states and 113537 transitions. [2018-11-07 17:01:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 17:01:11,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:01:11,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:01:11,355 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:01:11,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1667073090, now seen corresponding path program 1 times [2018-11-07 17:01:11,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:01:11,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:11,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:11,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:11,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:01:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:11,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:11,899 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:01:11,899 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 17:01:11,900 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], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [182], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:01:11,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:01:11,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:01:15,822 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:01:15,823 INFO L272 AbstractInterpreter]: Visited 161 different actions 480 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 17:01:15,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:15,828 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:01:15,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:15,828 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:01:15,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:15,837 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:01:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:16,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:01:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:16,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:01:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:16,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:01:16,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 17:01:16,434 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:01:16,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 17:01:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 17:01:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:01:16,435 INFO L87 Difference]: Start difference. First operand 73160 states and 113537 transitions. Second operand 9 states. [2018-11-07 17:01:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:01:24,560 INFO L93 Difference]: Finished difference Result 146285 states and 263630 transitions. [2018-11-07 17:01:24,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-07 17:01:24,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2018-11-07 17:01:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:01:25,143 INFO L225 Difference]: With dead ends: 146285 [2018-11-07 17:01:25,143 INFO L226 Difference]: Without dead ends: 73758 [2018-11-07 17:01:25,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 527 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 17:01:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73758 states. [2018-11-07 17:01:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73758 to 69019. [2018-11-07 17:01:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69019 states. [2018-11-07 17:01:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69019 states to 69019 states and 95467 transitions. [2018-11-07 17:01:28,380 INFO L78 Accepts]: Start accepts. Automaton has 69019 states and 95467 transitions. Word has length 251 [2018-11-07 17:01:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:01:28,380 INFO L480 AbstractCegarLoop]: Abstraction has 69019 states and 95467 transitions. [2018-11-07 17:01:28,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 17:01:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 69019 states and 95467 transitions. [2018-11-07 17:01:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 17:01:28,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:01:28,457 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2018-11-07 17:01:28,457 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:01:28,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:28,458 INFO L82 PathProgramCache]: Analyzing trace with hash -678867104, now seen corresponding path program 1 times [2018-11-07 17:01:28,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:01:28,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:28,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:28,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:28,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:01:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:29,134 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 17:01:29,381 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 17:01:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:29,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:29,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:01:29,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-07 17:01:29,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [378], [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], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:01:29,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:01:29,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:01:32,707 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:01:32,707 INFO L272 AbstractInterpreter]: Visited 161 different actions 477 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 17:01:32,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:32,713 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:01:32,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:32,713 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:01:32,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:32,724 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:01:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:32,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:01:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:33,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:01:33,425 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 17:01:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 17:01:34,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:01:34,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 17:01:34,077 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:01:34,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 17:01:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 17:01:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 17:01:34,078 INFO L87 Difference]: Start difference. First operand 69019 states and 95467 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 17:01:43,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-07 17:01:43,152 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:01:43,158 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:01:43,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:01:43 BoogieIcfgContainer [2018-11-07 17:01:43,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:01:43,159 INFO L168 Benchmark]: Toolchain (without parser) took 217449.34 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 239.2 MB. Max. memory is 7.1 GB. [2018-11-07 17:01:43,160 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:01:43,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1395.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 17:01:43,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 17:01:43,162 INFO L168 Benchmark]: Boogie Preprocessor took 147.73 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:01:43,163 INFO L168 Benchmark]: RCFGBuilder took 5235.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. [2018-11-07 17:01:43,164 INFO L168 Benchmark]: TraceAbstraction took 210388.88 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 4.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2018-11-07 17:01:43,170 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1395.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.73 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5235.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.2 MB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210388.88 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 4.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1479]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1479). Cancelled while BasicCegarLoop was constructing difference of abstraction (69019states) and FLOYD_HOARE automaton (currently 47 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (154047 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 168.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3126 SDtfs, 17805 SDslu, 4181 SDs, 0 SdLazy, 24392 SolverSat, 4753 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2287 GetRequests, 2045 SyntacticMatches, 25 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73160occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.4s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9987285164752057 AbsIntWeakeningRatio, 0.3380281690140845 AbsIntAvgWeakeningVarsNumRemoved, 54.934859154929576 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 5952 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3273 NumberOfCodeBlocks, 3273 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3996 ConstructedInterpolants, 0 QuantifiedInterpolants, 2867398 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3662 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 1404/1434 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown