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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:50:13,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:50:13,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:50:13,814 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:50:13,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:50:13,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:50:13,817 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:50:13,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:50:13,822 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:50:13,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:50:13,824 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:50:13,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:50:13,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:50:13,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:50:13,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:50:13,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:50:13,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:50:13,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:50:13,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:50:13,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:50:13,838 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:50:13,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:50:13,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:50:13,849 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:50:13,849 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:50:13,851 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:50:13,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:50:13,854 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:50:13,855 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:50:13,856 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:50:13,858 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:50:13,859 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:50:13,860 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:50:13,860 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:50:13,861 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:50:13,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:50:13,864 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:50:13,889 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:50:13,889 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:50:13,890 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:50:13,890 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:50:13,890 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:50:13,891 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:50:13,891 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:50:13,892 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:50:13,892 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:50:13,892 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:50:13,892 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:50:13,892 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:50:13,893 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:50:13,893 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:50:13,894 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:50:13,894 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:50:13,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:50:13,896 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:50:13,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:50:13,897 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:50:13,897 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:50:13,897 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:50:13,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:50:13,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:50:13,898 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:50:13,898 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:50:13,898 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:50:13,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:50:13,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:50:13,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:50:13,899 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:50:13,900 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:50:13,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:50:13,900 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:50:13,900 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:50:13,900 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:50:13,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:50:13,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:50:13,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:50:13,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:50:13,990 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:50:13,991 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-11-07 08:50:14,060 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e98c8a79/0f101ee5d73942edb6c740e7f005779f/FLAG487e8945b [2018-11-07 08:50:14,905 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:50:14,906 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-11-07 08:50:14,950 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e98c8a79/0f101ee5d73942edb6c740e7f005779f/FLAG487e8945b [2018-11-07 08:50:14,968 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e98c8a79/0f101ee5d73942edb6c740e7f005779f [2018-11-07 08:50:14,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:50:14,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:50:14,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:50:14,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:50:14,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:50:14,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:50:14" (1/1) ... [2018-11-07 08:50:14,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:14, skipping insertion in model container [2018-11-07 08:50:14,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:50:14" (1/1) ... [2018-11-07 08:50:15,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:50:15,201 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:50:16,784 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:50:16,789 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:50:17,537 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:50:17,578 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:50:17,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17 WrapperNode [2018-11-07 08:50:17,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:50:17,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:50:17,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:50:17,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:50:17,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:17,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:17,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:50:17,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:50:17,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:50:17,963 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:50:17,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:17,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (1/1) ... [2018-11-07 08:50:18,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:50:18,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:50:18,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:50:18,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:50:18,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (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 08:50:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:50:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:50:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:50:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:50:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:50:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:50:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:50:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:50:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:50:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:50:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:50:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:50:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:50:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:50:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:50:27,715 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:50:27,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:50:27 BoogieIcfgContainer [2018-11-07 08:50:27,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:50:27,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:50:27,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:50:27,720 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:50:27,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:50:14" (1/3) ... [2018-11-07 08:50:27,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ba26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:50:27, skipping insertion in model container [2018-11-07 08:50:27,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:50:17" (2/3) ... [2018-11-07 08:50:27,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ba26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:50:27, skipping insertion in model container [2018-11-07 08:50:27,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:50:27" (3/3) ... [2018-11-07 08:50:27,724 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-11-07 08:50:27,735 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:50:27,746 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:50:27,764 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:50:27,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:50:27,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:50:27,832 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:50:27,832 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:50:27,832 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:50:27,832 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:50:27,832 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:50:27,832 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:50:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:50:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 08:50:27,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:50:27,887 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] [2018-11-07 08:50:27,890 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:50:27,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:50:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash -113256892, now seen corresponding path program 1 times [2018-11-07 08:50:27,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:50:27,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:27,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:50:27,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:27,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:50:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:50:28,477 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 08:50:28,504 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 08:50:28,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:50:28,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:50:28,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:50:28,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:50:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:50:28,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:50:28,536 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 08:50:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:50:40,578 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 08:50:40,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:50:40,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-07 08:50:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:50:40,635 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 08:50:40,635 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 08:50:40,648 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:50:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 08:50:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 08:50:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 08:50:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 08:50:40,842 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 62 [2018-11-07 08:50:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:50:40,844 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 08:50:40,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:50:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 08:50:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 08:50:40,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:50:40,860 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 08:50:40,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:50:40,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:50:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 12905824, now seen corresponding path program 1 times [2018-11-07 08:50:40,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:50:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:40,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:50:40,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:40,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:50:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:50:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:50:41,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:50:41,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:50:41,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:50:41,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:50:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:50:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:50:41,189 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 08:50:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:50:54,547 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 08:50:54,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:50:54,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 08:50:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:50:54,572 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 08:50:54,572 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 08:50:54,580 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:50:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 08:50:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 08:50:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 08:50:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 08:50:54,681 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 132 [2018-11-07 08:50:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:50:54,682 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 08:50:54,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:50:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 08:50:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 08:50:54,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:50:54,687 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 08:50:54,687 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:50:54,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:50:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash -906091524, now seen corresponding path program 1 times [2018-11-07 08:50:54,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:50:54,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:54,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:50:54,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:50:54,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:50:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:50:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:50:54,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:50:54,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:50:54,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:50:54,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:50:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:50:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:50:54,925 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 08:51:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:51:03,698 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 08:51:03,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:51:03,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 08:51:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:51:03,744 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 08:51:03,744 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 08:51:03,758 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:51:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 08:51:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 08:51:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 08:51:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 08:51:03,940 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 134 [2018-11-07 08:51:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:51:03,940 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 08:51:03,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:51:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 08:51:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 08:51:03,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:03,945 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 08:51:03,946 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:03,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1690050436, now seen corresponding path program 1 times [2018-11-07 08:51:03,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:03,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:03,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:03,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:03,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:04,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:04,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:51:04,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:04,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:51:04,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:51:04,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:51:04,135 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 3 states. [2018-11-07 08:51:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:51:09,588 INFO L93 Difference]: Finished difference Result 20996 states and 32087 transitions. [2018-11-07 08:51:09,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:51:09,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-11-07 08:51:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:51:09,662 INFO L225 Difference]: With dead ends: 20996 [2018-11-07 08:51:09,662 INFO L226 Difference]: Without dead ends: 13835 [2018-11-07 08:51:09,695 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 08:51:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2018-11-07 08:51:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 13826. [2018-11-07 08:51:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13826 states. [2018-11-07 08:51:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 19425 transitions. [2018-11-07 08:51:10,018 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 19425 transitions. Word has length 178 [2018-11-07 08:51:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:51:10,019 INFO L480 AbstractCegarLoop]: Abstraction has 13826 states and 19425 transitions. [2018-11-07 08:51:10,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:51:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 19425 transitions. [2018-11-07 08:51:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 08:51:10,025 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:10,025 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-11-07 08:51:10,026 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:10,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1829231100, now seen corresponding path program 1 times [2018-11-07 08:51:10,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:10,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:10,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:10,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:10,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:10,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:10,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:51:10,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:10,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:51:10,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:51:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:51:10,307 INFO L87 Difference]: Start difference. First operand 13826 states and 19425 transitions. Second operand 4 states. [2018-11-07 08:51:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:51:18,195 INFO L93 Difference]: Finished difference Result 31683 states and 44323 transitions. [2018-11-07 08:51:18,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:51:18,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2018-11-07 08:51:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:51:18,252 INFO L225 Difference]: With dead ends: 31683 [2018-11-07 08:51:18,252 INFO L226 Difference]: Without dead ends: 17863 [2018-11-07 08:51:18,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:51:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17863 states. [2018-11-07 08:51:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17863 to 17862. [2018-11-07 08:51:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17862 states. [2018-11-07 08:51:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17862 states to 17862 states and 22157 transitions. [2018-11-07 08:51:18,641 INFO L78 Accepts]: Start accepts. Automaton has 17862 states and 22157 transitions. Word has length 183 [2018-11-07 08:51:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:51:18,642 INFO L480 AbstractCegarLoop]: Abstraction has 17862 states and 22157 transitions. [2018-11-07 08:51:18,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:51:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17862 states and 22157 transitions. [2018-11-07 08:51:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 08:51:18,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:18,652 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-11-07 08:51:18,652 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:18,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1374780002, now seen corresponding path program 1 times [2018-11-07 08:51:18,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:18,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:18,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:18,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:18,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:18,966 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:51:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:19,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:51:19,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:51:19,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-07 08:51:19,365 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3023], [3025], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3120], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:51:19,431 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:51:19,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:51:20,397 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:51:20,402 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:51:20,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:20,445 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:51:21,465 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 71.49% of their original sizes. [2018-11-07 08:51:21,465 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:51:21,706 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-07 08:51:21,707 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:51:21,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:51:21,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:51:21,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:21,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:51:21,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:51:21,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:51:21,709 INFO L87 Difference]: Start difference. First operand 17862 states and 22157 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown