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_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:58:09,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:58:09,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:58:09,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:58:09,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:58:09,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:58:09,968 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:58:09,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:58:09,973 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:58:09,974 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:58:09,975 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:58:09,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:58:09,976 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:58:09,977 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:58:09,978 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:58:09,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:58:09,981 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:58:09,983 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:58:09,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:58:09,987 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:58:09,988 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:58:09,989 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:58:09,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:58:09,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:58:09,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:58:09,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:58:09,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:58:09,995 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:58:09,996 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:58:09,997 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:58:09,998 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:58:09,998 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:58:09,999 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:58:09,999 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:58:10,000 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:58:10,001 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:58:10,001 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 15:58:10,029 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:58:10,029 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:58:10,030 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:58:10,030 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:58:10,031 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:58:10,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:58:10,031 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:58:10,031 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:58:10,031 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:58:10,032 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:58:10,032 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:58:10,032 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:58:10,033 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:58:10,033 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:58:10,033 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:58:10,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:58:10,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:58:10,034 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:58:10,034 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:58:10,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:58:10,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:58:10,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:58:10,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:58:10,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:58:10,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:58:10,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:58:10,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:58:10,037 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:58:10,037 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:58:10,038 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:58:10,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:58:10,038 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:58:10,038 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:58:10,038 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:58:10,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:58:10,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:58:10,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:58:10,135 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:58:10,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:58:10,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52_true-unreach-call.c [2018-11-07 15:58:10,202 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d133c3c04/f429514cbe1a4d7d9140ca58e7e49b39/FLAG9886fe57d [2018-11-07 15:58:11,108 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:58:11,109 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label52_true-unreach-call.c [2018-11-07 15:58:11,159 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d133c3c04/f429514cbe1a4d7d9140ca58e7e49b39/FLAG9886fe57d [2018-11-07 15:58:11,176 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d133c3c04/f429514cbe1a4d7d9140ca58e7e49b39 [2018-11-07 15:58:11,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:58:11,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:58:11,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:58:11,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:58:11,199 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:58:11,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:11" (1/1) ... [2018-11-07 15:58:11,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:11, skipping insertion in model container [2018-11-07 15:58:11,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:11" (1/1) ... [2018-11-07 15:58:11,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:58:11,474 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:58:13,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:58:13,470 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:58:14,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:58:14,709 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:58:14,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14 WrapperNode [2018-11-07 15:58:14,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:58:14,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:58:14,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:58:14,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:58:14,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:58:15,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:58:15,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:58:15,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:58:15,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (1/1) ... [2018-11-07 15:58:15,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:58:15,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:58:15,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:58:15,870 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:58:15,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (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 15:58:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:58:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:58:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:58:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:58:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:58:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:58:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:58:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:58:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:58:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:58:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:58:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:58:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:58:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:58:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:58:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:58:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:58:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:58:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:58:31,240 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:58:31,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:58:31 BoogieIcfgContainer [2018-11-07 15:58:31,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:58:31,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:58:31,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:58:31,245 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:58:31,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:58:11" (1/3) ... [2018-11-07 15:58:31,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c72df92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:58:31, skipping insertion in model container [2018-11-07 15:58:31,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:14" (2/3) ... [2018-11-07 15:58:31,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c72df92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:58:31, skipping insertion in model container [2018-11-07 15:58:31,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:58:31" (3/3) ... [2018-11-07 15:58:31,249 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label52_true-unreach-call.c [2018-11-07 15:58:31,259 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:58:31,268 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:58:31,283 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:58:31,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:58:31,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:58:31,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:58:31,343 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:58:31,344 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:58:31,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:58:31,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:58:31,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:58:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:58:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 15:58:31,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:31,422 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:58:31,424 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:31,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 286172164, now seen corresponding path program 1 times [2018-11-07 15:58:31,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:31,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:31,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:31,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:31,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:31,942 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:58:32,060 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 15:58:32,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:32,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:58:32,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:32,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:58:32,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:58:32,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:58:32,090 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:58:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:47,547 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-11-07 15:58:47,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:58:47,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-11-07 15:58:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:47,597 INFO L225 Difference]: With dead ends: 4998 [2018-11-07 15:58:47,597 INFO L226 Difference]: Without dead ends: 3218 [2018-11-07 15:58:47,608 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 15:58:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-11-07 15:58:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-11-07 15:58:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 15:58:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-11-07 15:58:47,806 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 62 [2018-11-07 15:58:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:47,807 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-11-07 15:58:47,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:58:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-11-07 15:58:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 15:58:47,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:47,819 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:58:47,819 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:47,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:47,823 INFO L82 PathProgramCache]: Analyzing trace with hash 455722041, now seen corresponding path program 1 times [2018-11-07 15:58:47,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:47,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:47,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:47,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:47,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:48,203 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:58:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:58:48,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:48,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:58:48,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:48,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:58:48,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:58:48,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:58:48,605 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-11-07 15:59:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:11,039 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-11-07 15:59:11,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:59:11,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 15:59:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:11,090 INFO L225 Difference]: With dead ends: 9340 [2018-11-07 15:59:11,090 INFO L226 Difference]: Without dead ends: 6131 [2018-11-07 15:59:11,101 INFO L604 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 [2018-11-07 15:59:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-11-07 15:59:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-11-07 15:59:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-11-07 15:59:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-11-07 15:59:11,263 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 134 [2018-11-07 15:59:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:11,264 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-11-07 15:59:11,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-11-07 15:59:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 15:59:11,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:11,270 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:59:11,270 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:11,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:11,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1452331278, now seen corresponding path program 1 times [2018-11-07 15:59:11,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:11,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:11,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:11,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:11,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:11,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:11,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:11,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:11,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:11,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:11,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:11,557 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-11-07 15:59:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:32,969 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-11-07 15:59:32,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:59:32,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 15:59:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:33,057 INFO L225 Difference]: With dead ends: 21091 [2018-11-07 15:59:33,058 INFO L226 Difference]: Without dead ends: 15006 [2018-11-07 15:59:33,083 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 15:59:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-11-07 15:59:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-11-07 15:59:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-11-07 15:59:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-11-07 15:59:33,467 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 136 [2018-11-07 15:59:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:33,467 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-11-07 15:59:33,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-11-07 15:59:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 15:59:33,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:33,473 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:59:33,473 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:33,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -724154579, now seen corresponding path program 1 times [2018-11-07 15:59:33,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:33,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:33,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:33,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:33,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:33,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:33,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:33,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:33,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:33,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:33,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:33,867 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 6 states. [2018-11-07 16:00:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:00:02,752 INFO L93 Difference]: Finished difference Result 58668 states and 93381 transitions. [2018-11-07 16:00:02,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:00:02,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 16:00:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:00:02,933 INFO L225 Difference]: With dead ends: 58668 [2018-11-07 16:00:02,933 INFO L226 Difference]: Without dead ends: 43857 [2018-11-07 16:00:03,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:00:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43857 states. [2018-11-07 16:00:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43857 to 43761. [2018-11-07 16:00:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43761 states. [2018-11-07 16:00:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43761 states to 43761 states and 63260 transitions. [2018-11-07 16:00:04,120 INFO L78 Accepts]: Start accepts. Automaton has 43761 states and 63260 transitions. Word has length 158 [2018-11-07 16:00:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:00:04,121 INFO L480 AbstractCegarLoop]: Abstraction has 43761 states and 63260 transitions. [2018-11-07 16:00:04,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:00:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 43761 states and 63260 transitions. [2018-11-07 16:00:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 16:00:04,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:00:04,128 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:00:04,129 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:00:04,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash 491943707, now seen corresponding path program 1 times [2018-11-07 16:00:04,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:00:04,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:04,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:00:04,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:04,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:00:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:00:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:00:04,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:00:04,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 16:00:04,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:00:04,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 16:00:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 16:00:04,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 16:00:04,468 INFO L87 Difference]: Start difference. First operand 43761 states and 63260 transitions. Second operand 5 states. [2018-11-07 16:00:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:00:23,475 INFO L93 Difference]: Finished difference Result 132476 states and 204648 transitions. [2018-11-07 16:00:23,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:00:23,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2018-11-07 16:00:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:00:23,808 INFO L225 Difference]: With dead ends: 132476 [2018-11-07 16:00:23,808 INFO L226 Difference]: Without dead ends: 88721 [2018-11-07 16:00:23,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:00:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88721 states. [2018-11-07 16:00:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88721 to 87937. [2018-11-07 16:00:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87937 states. [2018-11-07 16:00:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87937 states to 87937 states and 120985 transitions. [2018-11-07 16:00:26,393 INFO L78 Accepts]: Start accepts. Automaton has 87937 states and 120985 transitions. Word has length 167 [2018-11-07 16:00:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:00:26,394 INFO L480 AbstractCegarLoop]: Abstraction has 87937 states and 120985 transitions. [2018-11-07 16:00:26,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 16:00:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 87937 states and 120985 transitions. [2018-11-07 16:00:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 16:00:26,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:00:26,405 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:00:26,405 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:00:26,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1494786500, now seen corresponding path program 1 times [2018-11-07 16:00:26,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:00:26,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:26,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:00:26,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:26,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:00:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:00:26,683 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 16:00:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:00:26,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:00:26,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 16:00:26,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:00:26,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 16:00:26,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 16:00:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:00:26,753 INFO L87 Difference]: Start difference. First operand 87937 states and 120985 transitions. Second operand 6 states. [2018-11-07 16:00:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:00:45,801 INFO L93 Difference]: Finished difference Result 207620 states and 303746 transitions. [2018-11-07 16:00:45,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:00:45,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 16:00:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:00:46,223 INFO L225 Difference]: With dead ends: 207620 [2018-11-07 16:00:46,223 INFO L226 Difference]: Without dead ends: 119689 [2018-11-07 16:00:46,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:00:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119689 states. [2018-11-07 16:00:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119689 to 119290. [2018-11-07 16:00:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119290 states. [2018-11-07 16:00:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119290 states to 119290 states and 160283 transitions. [2018-11-07 16:00:49,531 INFO L78 Accepts]: Start accepts. Automaton has 119290 states and 160283 transitions. Word has length 195 [2018-11-07 16:00:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:00:49,531 INFO L480 AbstractCegarLoop]: Abstraction has 119290 states and 160283 transitions. [2018-11-07 16:00:49,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:00:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 119290 states and 160283 transitions. [2018-11-07 16:00:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-07 16:00:49,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:00:49,549 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:00:49,550 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:00:49,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:49,550 INFO L82 PathProgramCache]: Analyzing trace with hash -272986980, now seen corresponding path program 1 times [2018-11-07 16:00:49,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:00:49,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:49,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:00:49,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:49,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:00:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:00:49,804 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 16:00:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 16:00:50,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:00:50,187 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:00:50,188 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-07 16:00:50,191 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], [5602], [5610], [5618], [5622], [5624], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [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], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 16:00:50,243 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:00:50,244 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:00:50,867 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:00:50,869 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 16:00:50,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:50,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:00:51,498 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 16:00:51,498 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:00:51,853 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-11-07 16:00:51,854 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:00:51,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:00:51,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 16:00:51,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:00:51,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 16:00:51,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 16:00:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:00:51,856 INFO L87 Difference]: Start difference. First operand 119290 states and 160283 transitions. Second operand 7 states. [2018-11-07 16:00:57,269 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