java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:28:29,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:28:29,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:28:29,993 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:28:29,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:28:29,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:28:29,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:28:30,000 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:28:30,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:28:30,002 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:28:30,003 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:28:30,003 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:28:30,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:28:30,005 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:28:30,007 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:28:30,007 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:28:30,008 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:28:30,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:28:30,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:28:30,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:28:30,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:28:30,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:28:30,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:28:30,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:28:30,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:28:30,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:28:30,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:28:30,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:28:30,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:28:30,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:28:30,039 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:28:30,040 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 22:28:30,040 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:28:30,040 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:28:30,043 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:28:30,045 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:28:30,045 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:28:30,075 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:28:30,075 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:28:30,076 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:28:30,076 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:28:30,076 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:28:30,077 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:28:30,077 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:28:30,077 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:28:30,077 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:28:30,077 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:28:30,078 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:28:30,078 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:28:30,079 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:28:30,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:28:30,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:28:30,079 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:28:30,080 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:28:30,080 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:28:30,080 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:28:30,080 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:28:30,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:28:30,082 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:28:30,082 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:28:30,083 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:28:30,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:28:30,083 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:28:30,083 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:28:30,083 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:28:30,084 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:28:30,084 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:28:30,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:28:30,084 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:28:30,084 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:28:30,085 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:28:30,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:28:30,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:28:30,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:28:30,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:28:30,171 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:28:30,172 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 22:28:30,242 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdfb8a62/30e1f41225074b44ba6039464434d78c/FLAG9b06b4054 [2018-10-24 22:28:31,151 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:28:31,152 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 22:28:31,202 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdfb8a62/30e1f41225074b44ba6039464434d78c/FLAG9b06b4054 [2018-10-24 22:28:31,218 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdfb8a62/30e1f41225074b44ba6039464434d78c [2018-10-24 22:28:31,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:28:31,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:28:31,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:28:31,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:28:31,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:28:31,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:31" (1/1) ... [2018-10-24 22:28:31,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:31, skipping insertion in model container [2018-10-24 22:28:31,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:31" (1/1) ... [2018-10-24 22:28:31,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:28:31,512 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:28:33,548 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:28:33,553 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:28:34,714 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:28:34,775 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:28:34,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34 WrapperNode [2018-10-24 22:28:34,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:28:34,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:28:34,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:28:34,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:28:34,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:34,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:28:35,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:28:35,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:28:35,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:28:35,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:35,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:36,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... [2018-10-24 22:28:36,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:28:36,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:28:36,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:28:36,150 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:28:36,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:28:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:28:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:28:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:28:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:28:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:28:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:28:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:28:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:28:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:28:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:28:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:28:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:28:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:28:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:28:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:28:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:28:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:28:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:28:53,809 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:28:53,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:53 BoogieIcfgContainer [2018-10-24 22:28:53,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:28:53,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:28:53,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:28:53,815 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:28:53,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:28:31" (1/3) ... [2018-10-24 22:28:53,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297116b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:53, skipping insertion in model container [2018-10-24 22:28:53,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:34" (2/3) ... [2018-10-24 22:28:53,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297116b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:53, skipping insertion in model container [2018-10-24 22:28:53,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:53" (3/3) ... [2018-10-24 22:28:53,819 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label23_true-unreach-call.c [2018-10-24 22:28:53,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:28:53,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:28:53,859 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:28:53,915 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:28:53,915 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:28:53,915 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:28:53,915 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:28:53,916 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:28:53,916 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:28:53,916 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:28:53,916 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:28:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:28:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 22:28:53,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:28:53,983 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:28:53,985 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:28:53,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:28:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash -11956822, now seen corresponding path program 1 times [2018-10-24 22:28:53,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:28:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:54,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:28:54,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:54,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:28:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:28:54,543 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:28:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:28:54,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:28:54,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:28:54,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:28:54,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:28:54,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:28:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:28:54,705 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 22:29:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:29:08,862 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-24 22:29:08,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:29:08,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-24 22:29:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:29:08,911 INFO L225 Difference]: With dead ends: 4999 [2018-10-24 22:29:08,912 INFO L226 Difference]: Without dead ends: 3219 [2018-10-24 22:29:08,923 INFO L605 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 [2018-10-24 22:29:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-24 22:29:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-24 22:29:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 22:29:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-24 22:29:09,126 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 59 [2018-10-24 22:29:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:29:09,127 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-24 22:29:09,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:29:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-24 22:29:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 22:29:09,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:29:09,136 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:29:09,136 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:29:09,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:29:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1729747758, now seen corresponding path program 1 times [2018-10-24 22:29:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:29:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:09,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:29:09,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:09,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:29:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:29:09,542 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:29:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:29:09,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:29:09,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:29:09,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:29:09,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:29:09,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:29:09,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:29:09,924 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-24 22:29:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:29:36,696 INFO L93 Difference]: Finished difference Result 9343 states and 16923 transitions. [2018-10-24 22:29:36,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:29:36,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 22:29:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:29:36,735 INFO L225 Difference]: With dead ends: 9343 [2018-10-24 22:29:36,735 INFO L226 Difference]: Without dead ends: 6134 [2018-10-24 22:29:36,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:29:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2018-10-24 22:29:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6093. [2018-10-24 22:29:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2018-10-24 22:29:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 9626 transitions. [2018-10-24 22:29:36,913 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 9626 transitions. Word has length 131 [2018-10-24 22:29:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:29:36,914 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 9626 transitions. [2018-10-24 22:29:36,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:29:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 9626 transitions. [2018-10-24 22:29:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 22:29:36,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:29:36,926 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:29:36,926 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:29:36,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:29:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1793375852, now seen corresponding path program 1 times [2018-10-24 22:29:36,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:29:36,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:36,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:29:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:36,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:29:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:29:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:29:37,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:29:37,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:29:37,149 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:29:37,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:29:37,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:29:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:29:37,153 INFO L87 Difference]: Start difference. First operand 6093 states and 9626 transitions. Second operand 6 states. [2018-10-24 22:30:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:30:30,198 INFO L93 Difference]: Finished difference Result 24260 states and 39729 transitions. [2018-10-24 22:30:30,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:30:30,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 22:30:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:30:30,315 INFO L225 Difference]: With dead ends: 24260 [2018-10-24 22:30:30,316 INFO L226 Difference]: Without dead ends: 18173 [2018-10-24 22:30:30,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:30:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18173 states. [2018-10-24 22:30:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18173 to 18097. [2018-10-24 22:30:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18097 states. [2018-10-24 22:30:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18097 states to 18097 states and 25642 transitions. [2018-10-24 22:30:30,849 INFO L78 Accepts]: Start accepts. Automaton has 18097 states and 25642 transitions. Word has length 149 [2018-10-24 22:30:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:30:30,849 INFO L481 AbstractCegarLoop]: Abstraction has 18097 states and 25642 transitions. [2018-10-24 22:30:30,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:30:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18097 states and 25642 transitions. [2018-10-24 22:30:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 22:30:30,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:30,861 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:30:30,861 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:30,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:30,862 INFO L82 PathProgramCache]: Analyzing trace with hash -808835625, now seen corresponding path program 1 times [2018-10-24 22:30:30,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:30,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:30,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:30,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:30,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:30:31,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:30:31,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:30:31,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:31,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:30:31,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:30:31,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:30:31,186 INFO L87 Difference]: Start difference. First operand 18097 states and 25642 transitions. Second operand 5 states. [2018-10-24 22:31:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:06,239 INFO L93 Difference]: Finished difference Result 56359 states and 85062 transitions. [2018-10-24 22:31:06,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:31:06,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2018-10-24 22:31:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:06,426 INFO L225 Difference]: With dead ends: 56359 [2018-10-24 22:31:06,426 INFO L226 Difference]: Without dead ends: 38268 [2018-10-24 22:31:06,489 INFO L605 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 [2018-10-24 22:31:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38268 states. [2018-10-24 22:31:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38268 to 37197. [2018-10-24 22:31:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37197 states. [2018-10-24 22:31:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37197 states to 37197 states and 50468 transitions. [2018-10-24 22:31:07,535 INFO L78 Accepts]: Start accepts. Automaton has 37197 states and 50468 transitions. Word has length 194 [2018-10-24 22:31:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:07,535 INFO L481 AbstractCegarLoop]: Abstraction has 37197 states and 50468 transitions. [2018-10-24 22:31:07,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:31:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 37197 states and 50468 transitions. [2018-10-24 22:31:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 22:31:07,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:07,545 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:31:07,545 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:07,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1152839494, now seen corresponding path program 1 times [2018-10-24 22:31:07,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:07,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:07,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:07,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:07,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:31:08,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:31:08,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:31:08,050 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-24 22:31:08,052 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], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5598], [5600], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 22:31:08,138 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:31:08,138 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:31:11,120 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:31:11,122 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:31:11,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:11,133 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:31:13,463 INFO L232 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 75.86% of their original sizes. [2018-10-24 22:31:13,463 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:31:13,916 INFO L413 sIntCurrentIteration]: We have 213 unified AI predicates [2018-10-24 22:31:13,917 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:31:13,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:31:13,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:31:13,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:13,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:31:13,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:31:13,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:31:13,919 INFO L87 Difference]: Start difference. First operand 37197 states and 50468 transitions. Second operand 7 states. [2018-10-24 22:31:18,784 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown