java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:49:28,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:49:28,736 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:49:28,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:49:28,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:49:28,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:49:28,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:49:28,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:49:28,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:49:28,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:49:28,773 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:49:28,773 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:49:28,774 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:49:28,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:49:28,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:49:28,781 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:49:28,781 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:49:28,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:49:28,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:49:28,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:49:28,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:49:28,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:49:28,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:49:28,798 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:49:28,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:49:28,799 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:49:28,800 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:49:28,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:49:28,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:49:28,803 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:49:28,804 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:49:28,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:49:28,805 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:49:28,805 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:49:28,806 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:49:28,806 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:49:28,807 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:49:28,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:49:28,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:49:28,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:49:28,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:49:28,823 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:49:28,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:49:28,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:49:28,823 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:49:28,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:49:28,824 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:49:28,824 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:49:28,824 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:49:28,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:49:28,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:49:28,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:49:28,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:49:28,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:49:28,825 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:49:28,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:49:28,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:49:28,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:49:28,826 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:49:28,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:49:28,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:49:28,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:49:28,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:49:28,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:49:28,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:49:28,830 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:49:28,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:49:28,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:49:28,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:49:28,831 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:49:28,831 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:49:28,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:49:28,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:49:28,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:49:28,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:49:28,914 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:49:28,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-11-07 15:49:28,988 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a503e1fe4/13b2c4ce908c42a284945578051bd86e/FLAG93250daf3 [2018-11-07 15:49:29,890 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:49:29,891 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-11-07 15:49:29,942 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a503e1fe4/13b2c4ce908c42a284945578051bd86e/FLAG93250daf3 [2018-11-07 15:49:29,959 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a503e1fe4/13b2c4ce908c42a284945578051bd86e [2018-11-07 15:49:29,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:49:29,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:49:29,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:49:29,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:49:29,981 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:49:29,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:29" (1/1) ... [2018-11-07 15:49:29,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a14655d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:29, skipping insertion in model container [2018-11-07 15:49:29,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:29" (1/1) ... [2018-11-07 15:49:29,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:49:30,258 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:49:32,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:49:32,312 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:49:33,797 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:49:33,862 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:49:33,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33 WrapperNode [2018-11-07 15:49:33,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:49:33,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:49:33,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:49:33,864 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:49:33,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:49:34,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:49:34,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:49:34,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:49:34,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:34,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (1/1) ... [2018-11-07 15:49:35,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:49:35,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:49:35,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:49:35,094 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:49:35,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (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 15:49:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:49:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:49:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:49:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:49:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:49:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:49:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:49:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:49:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:49:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:49:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:49:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:49:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:49:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:49:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:49:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:49:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:49:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:49:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:49:50,975 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:49:50,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:49:50 BoogieIcfgContainer [2018-11-07 15:49:50,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:49:50,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:49:50,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:49:50,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:49:50,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:49:29" (1/3) ... [2018-11-07 15:49:50,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed584cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:49:50, skipping insertion in model container [2018-11-07 15:49:50,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:33" (2/3) ... [2018-11-07 15:49:50,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed584cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:49:50, skipping insertion in model container [2018-11-07 15:49:50,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:49:50" (3/3) ... [2018-11-07 15:49:50,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label00_true-unreach-call.c [2018-11-07 15:49:50,994 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:49:51,003 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:49:51,019 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:49:51,082 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:49:51,082 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:49:51,083 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:49:51,083 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:49:51,083 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:49:51,083 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:49:51,083 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:49:51,083 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:49:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:49:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 15:49:51,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:51,153 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] [2018-11-07 15:49:51,155 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:51,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:51,161 INFO L82 PathProgramCache]: Analyzing trace with hash 367112186, now seen corresponding path program 1 times [2018-11-07 15:49:51,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:51,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:51,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:51,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:51,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:51,651 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:49:51,764 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 15:49:51,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:51,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:49:51,767 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:51,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:49:51,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:49:51,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:49:51,792 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:50:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:04,047 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-07 15:50:04,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:50:04,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 15:50:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:04,103 INFO L225 Difference]: With dead ends: 4995 [2018-11-07 15:50:04,104 INFO L226 Difference]: Without dead ends: 3215 [2018-11-07 15:50:04,116 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 15:50:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-07 15:50:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-07 15:50:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-07 15:50:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-07 15:50:04,341 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 47 [2018-11-07 15:50:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:04,342 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-07 15:50:04,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:50:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-07 15:50:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 15:50:04,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:04,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:04,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:04,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1856794282, now seen corresponding path program 1 times [2018-11-07 15:50:04,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:04,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:04,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:04,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:04,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:04,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:50:04,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:04,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:50:04,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:50:04,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:50:04,774 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-07 15:50:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:35,576 INFO L93 Difference]: Finished difference Result 12252 states and 22706 transitions. [2018-11-07 15:50:35,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:50:35,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 15:50:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:35,626 INFO L225 Difference]: With dead ends: 12252 [2018-11-07 15:50:35,626 INFO L226 Difference]: Without dead ends: 9045 [2018-11-07 15:50:35,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:50:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2018-11-07 15:50:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 8962. [2018-11-07 15:50:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2018-11-07 15:50:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 13239 transitions. [2018-11-07 15:50:35,869 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 13239 transitions. Word has length 121 [2018-11-07 15:50:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:35,870 INFO L480 AbstractCegarLoop]: Abstraction has 8962 states and 13239 transitions. [2018-11-07 15:50:35,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:50:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 13239 transitions. [2018-11-07 15:50:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 15:50:35,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:35,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:35,883 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:35,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1738308994, now seen corresponding path program 1 times [2018-11-07 15:50:35,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:35,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:35,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:35,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:35,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:36,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:36,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:50:36,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:36,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:50:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:50:36,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:50:36,114 INFO L87 Difference]: Start difference. First operand 8962 states and 13239 transitions. Second operand 6 states. [2018-11-07 15:50:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:50,622 INFO L93 Difference]: Finished difference Result 21238 states and 31872 transitions. [2018-11-07 15:50:50,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:50:50,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-07 15:50:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:50,693 INFO L225 Difference]: With dead ends: 21238 [2018-11-07 15:50:50,694 INFO L226 Difference]: Without dead ends: 12282 [2018-11-07 15:50:50,719 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 15:50:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2018-11-07 15:50:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 12118. [2018-11-07 15:50:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12118 states. [2018-11-07 15:50:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 17275 transitions. [2018-11-07 15:50:51,054 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 17275 transitions. Word has length 126 [2018-11-07 15:50:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:51,054 INFO L480 AbstractCegarLoop]: Abstraction has 12118 states and 17275 transitions. [2018-11-07 15:50:51,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:50:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 17275 transitions. [2018-11-07 15:50:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 15:50:51,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:51,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:51,062 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:51,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2082641050, now seen corresponding path program 1 times [2018-11-07 15:50:51,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:51,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:51,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:51,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:51,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:51,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:50:51,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:51,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:50:51,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:50:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:50:51,571 INFO L87 Difference]: Start difference. First operand 12118 states and 17275 transitions. Second operand 6 states. [2018-11-07 15:51:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:06,581 INFO L93 Difference]: Finished difference Result 36919 states and 53751 transitions. [2018-11-07 15:51:06,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:51:06,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-07 15:51:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:06,660 INFO L225 Difference]: With dead ends: 36919 [2018-11-07 15:51:06,660 INFO L226 Difference]: Without dead ends: 24807 [2018-11-07 15:51:06,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:51:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24807 states. [2018-11-07 15:51:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24807 to 24396. [2018-11-07 15:51:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24396 states. [2018-11-07 15:51:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 34086 transitions. [2018-11-07 15:51:07,253 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 34086 transitions. Word has length 129 [2018-11-07 15:51:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:07,254 INFO L480 AbstractCegarLoop]: Abstraction has 24396 states and 34086 transitions. [2018-11-07 15:51:07,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:51:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 34086 transitions. [2018-11-07 15:51:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 15:51:07,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:07,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:07,257 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:07,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:07,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1549730492, now seen corresponding path program 1 times [2018-11-07 15:51:07,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:07,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:07,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:07,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:07,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:07,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:07,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:51:07,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:07,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:51:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:51:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:51:07,531 INFO L87 Difference]: Start difference. First operand 24396 states and 34086 transitions. Second operand 5 states. [2018-11-07 15:51:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:26,192 INFO L93 Difference]: Finished difference Result 75636 states and 108690 transitions. [2018-11-07 15:51:26,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:51:26,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-11-07 15:51:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:26,369 INFO L225 Difference]: With dead ends: 75636 [2018-11-07 15:51:26,370 INFO L226 Difference]: Without dead ends: 51246 [2018-11-07 15:51:26,425 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 15:51:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51246 states. [2018-11-07 15:51:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51246 to 49386. [2018-11-07 15:51:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49386 states. [2018-11-07 15:51:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49386 states to 49386 states and 63843 transitions. [2018-11-07 15:51:27,468 INFO L78 Accepts]: Start accepts. Automaton has 49386 states and 63843 transitions. Word has length 149 [2018-11-07 15:51:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:27,470 INFO L480 AbstractCegarLoop]: Abstraction has 49386 states and 63843 transitions. [2018-11-07 15:51:27,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:51:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 49386 states and 63843 transitions. [2018-11-07 15:51:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-11-07 15:51:27,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:27,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:27,474 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:27,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:27,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1873414750, now seen corresponding path program 1 times [2018-11-07 15:51:27,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:27,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:27,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:27,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:27,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:27,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:27,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:51:27,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:27,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:51:27,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:51:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:51:27,771 INFO L87 Difference]: Start difference. First operand 49386 states and 63843 transitions. Second operand 4 states. [2018-11-07 15:51:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:43,838 INFO L93 Difference]: Finished difference Result 180029 states and 251092 transitions. [2018-11-07 15:51:43,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:51:43,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2018-11-07 15:51:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:44,256 INFO L225 Difference]: With dead ends: 180029 [2018-11-07 15:51:44,256 INFO L226 Difference]: Without dead ends: 130649 [2018-11-07 15:51:44,413 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 15:51:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130649 states. [2018-11-07 15:51:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130649 to 130279. [2018-11-07 15:51:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130279 states. [2018-11-07 15:51:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130279 states to 130279 states and 172761 transitions. [2018-11-07 15:51:46,601 INFO L78 Accepts]: Start accepts. Automaton has 130279 states and 172761 transitions. Word has length 259 [2018-11-07 15:51:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:46,601 INFO L480 AbstractCegarLoop]: Abstraction has 130279 states and 172761 transitions. [2018-11-07 15:51:46,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:51:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 130279 states and 172761 transitions. [2018-11-07 15:51:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-11-07 15:51:46,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:46,625 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:51:46,625 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:46,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1006243321, now seen corresponding path program 1 times [2018-11-07 15:51:46,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:46,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:46,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:46,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:46,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 335 proven. 98 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 15:51:48,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:51:48,040 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:51:48,041 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-11-07 15:51:48,044 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5502], [5504], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:51:48,107 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:51:48,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:51:49,123 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:51:49,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:51:49,640 INFO L272 AbstractInterpreter]: Visited 221 different actions 221 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:51:49,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:49,696 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:51:51,448 INFO L227 lantSequenceWeakener]: Weakened 561 states. On average, predicates are now at 75.19% of their original sizes. [2018-11-07 15:51:51,448 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:51:51,812 INFO L415 sIntCurrentIteration]: We unified 574 AI predicates to 574 [2018-11-07 15:51:51,812 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:51:51,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:51:51,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:51:51,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:51,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:51:51,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:51:51,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:51:51,815 INFO L87 Difference]: Start difference. First operand 130279 states and 172761 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown