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_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:54:57,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:54:57,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:54:57,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:54:57,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:54:57,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:54:57,765 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:54:57,768 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:54:57,770 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:54:57,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:54:57,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:54:57,771 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:54:57,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:54:57,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:54:57,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:54:57,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:54:57,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:54:57,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:54:57,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:54:57,795 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:54:57,796 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:54:57,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:54:57,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:54:57,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:54:57,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:54:57,801 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:54:57,802 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:54:57,803 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:54:57,803 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:54:57,805 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:54:57,805 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:54:57,805 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:54:57,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:54:57,806 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:54:57,808 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:54:57,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:54:57,810 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 08:54:57,836 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:54:57,837 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:54:57,838 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:54:57,838 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:54:57,838 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:54:57,839 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:54:57,839 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:54:57,840 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:54:57,840 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:54:57,840 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:54:57,840 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:54:57,840 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:54:57,841 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:54:57,841 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:54:57,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:54:57,842 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:54:57,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:54:57,843 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:54:57,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:54:57,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:54:57,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:54:57,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:54:57,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:54:57,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:54:57,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:54:57,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:54:57,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:57,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:54:57,847 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:54:57,848 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:54:57,848 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:54:57,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:54:57,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:54:57,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:54:57,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:54:57,920 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:54:57,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-11-07 08:54:57,986 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22687261/42ce79889a78438fb6590737e93970a2/FLAGf325ae33a [2018-11-07 08:54:58,864 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:54:58,865 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-11-07 08:54:58,898 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22687261/42ce79889a78438fb6590737e93970a2/FLAGf325ae33a [2018-11-07 08:54:58,918 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22687261/42ce79889a78438fb6590737e93970a2 [2018-11-07 08:54:58,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:54:58,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:54:58,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:58,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:54:58,940 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:54:58,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:58" (1/1) ... [2018-11-07 08:54:58,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29a96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:58, skipping insertion in model container [2018-11-07 08:54:58,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:58" (1/1) ... [2018-11-07 08:54:58,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:54:59,154 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:55:00,661 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:00,666 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:55:01,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:01,435 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:55:01,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01 WrapperNode [2018-11-07 08:55:01,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:55:01,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:01,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:55:01,438 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:55:01,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:01,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:55:01,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:55:01,814 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:55:01,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:01,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:02,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:02,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (1/1) ... [2018-11-07 08:55:02,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:55:02,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:55:02,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:55:02,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:55:02,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (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 08:55:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:55:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:55:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:55:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:55:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:55:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:55:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:55:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:55:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:55:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:55:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:55:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:55:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:55:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:55:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:55:11,793 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:55:11,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:11 BoogieIcfgContainer [2018-11-07 08:55:11,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:55:11,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:55:11,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:55:11,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:55:11,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:58" (1/3) ... [2018-11-07 08:55:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad4227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:11, skipping insertion in model container [2018-11-07 08:55:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:01" (2/3) ... [2018-11-07 08:55:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad4227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:11, skipping insertion in model container [2018-11-07 08:55:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:11" (3/3) ... [2018-11-07 08:55:11,804 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label55_true-unreach-call.c [2018-11-07 08:55:11,814 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:55:11,825 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:55:11,845 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:55:11,904 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:55:11,904 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:55:11,904 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:55:11,904 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:55:11,905 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:55:11,906 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:55:11,906 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:55:11,906 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:55:11,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:55:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 08:55:11,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:11,978 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] [2018-11-07 08:55:11,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:11,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash -661106381, now seen corresponding path program 1 times [2018-11-07 08:55:11,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:12,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:12,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:12,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:12,514 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:12,639 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 08:55:12,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:12,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:55:12,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:12,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:55:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:55:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:12,668 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:55:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:20,941 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 08:55:20,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:55:20,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-11-07 08:55:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:20,977 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 08:55:20,978 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 08:55:20,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 08:55:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 08:55:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 08:55:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 08:55:21,166 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 55 [2018-11-07 08:55:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:21,167 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 08:55:21,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:55:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 08:55:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 08:55:21,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:21,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:21,176 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:21,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1569430114, now seen corresponding path program 1 times [2018-11-07 08:55:21,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:21,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:21,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:21,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:21,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:21,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:21,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:55:21,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:21,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:55:21,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:55:21,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:55:21,528 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 08:55:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:34,945 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-07 08:55:34,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:34,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-11-07 08:55:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:34,972 INFO L225 Difference]: With dead ends: 5734 [2018-11-07 08:55:34,972 INFO L226 Difference]: Without dead ends: 3766 [2018-11-07 08:55:34,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:55:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-07 08:55:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-07 08:55:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-07 08:55:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-07 08:55:35,107 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 131 [2018-11-07 08:55:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:35,108 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-07 08:55:35,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:55:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-07 08:55:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 08:55:35,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:35,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:35,120 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:35,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:35,122 INFO L82 PathProgramCache]: Analyzing trace with hash -265518658, now seen corresponding path program 1 times [2018-11-07 08:55:35,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:35,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:35,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:35,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:35,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:35,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:35,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:55:35,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:35,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:55:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:55:35,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:55:35,357 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-07 08:55:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:50,890 INFO L93 Difference]: Finished difference Result 13648 states and 21726 transitions. [2018-11-07 08:55:50,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:50,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-11-07 08:55:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:50,957 INFO L225 Difference]: With dead ends: 13648 [2018-11-07 08:55:50,957 INFO L226 Difference]: Without dead ends: 9973 [2018-11-07 08:55:50,983 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 08:55:50,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2018-11-07 08:55:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9787. [2018-11-07 08:55:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9787 states. [2018-11-07 08:55:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 14484 transitions. [2018-11-07 08:55:51,278 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 14484 transitions. Word has length 145 [2018-11-07 08:55:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:51,278 INFO L480 AbstractCegarLoop]: Abstraction has 9787 states and 14484 transitions. [2018-11-07 08:55:51,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:55:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 14484 transitions. [2018-11-07 08:55:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 08:55:51,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:51,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:51,288 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:51,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash -507392094, now seen corresponding path program 1 times [2018-11-07 08:55:51,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:51,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:51,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:51,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:51,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:51,622 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:51,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:51,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:51,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:51,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:51,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:51,693 INFO L87 Difference]: Start difference. First operand 9787 states and 14484 transitions. Second operand 6 states. [2018-11-07 08:56:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:03,499 INFO L93 Difference]: Finished difference Result 34090 states and 53557 transitions. [2018-11-07 08:56:03,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:56:03,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-11-07 08:56:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:03,633 INFO L225 Difference]: With dead ends: 34090 [2018-11-07 08:56:03,633 INFO L226 Difference]: Without dead ends: 24309 [2018-11-07 08:56:03,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:56:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24309 states. [2018-11-07 08:56:04,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24309 to 24086. [2018-11-07 08:56:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24086 states. [2018-11-07 08:56:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24086 states to 24086 states and 33904 transitions. [2018-11-07 08:56:04,365 INFO L78 Accepts]: Start accepts. Automaton has 24086 states and 33904 transitions. Word has length 163 [2018-11-07 08:56:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:04,365 INFO L480 AbstractCegarLoop]: Abstraction has 24086 states and 33904 transitions. [2018-11-07 08:56:04,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 24086 states and 33904 transitions. [2018-11-07 08:56:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 08:56:04,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:04,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:04,373 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:04,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash -698990030, now seen corresponding path program 1 times [2018-11-07 08:56:04,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:04,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:04,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:04,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:04,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:56:04,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:56:04,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:56:04,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:04,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:56:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:56:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:56:04,651 INFO L87 Difference]: Start difference. First operand 24086 states and 33904 transitions. Second operand 4 states. [2018-11-07 08:56:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:15,915 INFO L93 Difference]: Finished difference Result 66456 states and 99385 transitions. [2018-11-07 08:56:15,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:56:15,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-11-07 08:56:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:16,120 INFO L225 Difference]: With dead ends: 66456 [2018-11-07 08:56:16,120 INFO L226 Difference]: Without dead ends: 42376 [2018-11-07 08:56:16,201 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 08:56:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42376 states. [2018-11-07 08:56:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42376 to 42323. [2018-11-07 08:56:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42323 states. [2018-11-07 08:56:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42323 states to 42323 states and 59721 transitions. [2018-11-07 08:56:17,247 INFO L78 Accepts]: Start accepts. Automaton has 42323 states and 59721 transitions. Word has length 171 [2018-11-07 08:56:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:17,247 INFO L480 AbstractCegarLoop]: Abstraction has 42323 states and 59721 transitions. [2018-11-07 08:56:17,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:56:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42323 states and 59721 transitions. [2018-11-07 08:56:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 08:56:17,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:17,277 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, 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] [2018-11-07 08:56:17,278 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:17,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1869313388, now seen corresponding path program 1 times [2018-11-07 08:56:17,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:17,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:17,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:17,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:17,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:17,585 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:56:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:56:17,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:56:17,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:56:17,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 08:56:18,001 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], [2967], [2969], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3155], [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], [3336], [3341], [3343], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:56:18,067 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:56:18,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:56:18,686 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:56:18,689 INFO L272 AbstractInterpreter]: Visited 122 different actions 122 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:56:18,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:18,735 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:56:19,333 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 71.37% of their original sizes. [2018-11-07 08:56:19,333 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:56:19,586 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 08:56:19,590 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:56:19,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:56:19,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:56:19,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:19,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:19,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:19,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:19,593 INFO L87 Difference]: Start difference. First operand 42323 states and 59721 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown